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Industry Knowledge
Q
What is your company name and where are you located?
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We are Shanghai Languan New Building Materials Co., Ltd., a professional manufacturer of flooring system building materials. Our production and R&D base is located in Deqing County, Huzhou City, Zhejiang Province, China.
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When was your company established?
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Shanghai Languan was officially established in April 2016, and our team has accumulated about 10 years of export experience in the flooring materials industry. Since our founding, we have grown into one of the largest self-leveling cement producers in China, with a nationwide production and distribution network serving both domestic and overseas clients.
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Are you a manufacturer or a trading company?
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We are both a manufacturer and a trading company. We own and operate multiple production bases in China and directly control the entire chain from raw material sourcing, formula development, production to quality control. This means better price stability, consistent quality, and reliable supply for our customers - no middleman markup.
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What are your main products?
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Our core product lines include: (1) Self-leveling cement series - cement-based and gypsum-based, covering civil, commercial and industrial grades (K18/K20/K26/K30/K50/K80 etc.); (2) Flooring adhesives - PVC, LVT, wood floor and carpet adhesives (LG840/LG850/LG880/LG890 etc.); (3) Water-based interface primers (LG660/LG670/LG680); (4) Quick repair mortars (A45/PP/K12); (5) Tile adhesives (YT1/YT2/YT3); (6) Non-shrink grouts (H60/H80/H90); (7) Waterproofing mortars (G1/G2); (8) Epoxy systems (KCC) and floor seal hardeners (L100).
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How many employees do you have and how big is your factory?
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We currently employ 63 staff members (BV-verified). Our production base covers 13,300 square meters, equipped with dedicated production lines, a self-developed standard laboratory system, and 2 full-time QA/QC inspectors. We also have 45 technical sales professionals who can reach project sites within 24 hours nationwide in China.
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Do you have your own production bases?
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Yes. We operate a nationwide production network with bases and R&D centers in Huzhou (Zhejiang), Wuhan (Hubei), Dongguan (Guangdong), Xi'an (Shaanxi), Linyi (Shandong), Changchun (Jilin), Shijiazhuang (Hebei), Haikou (Hainan) and Chongqing. In addition, we have 167 agents and inventory centers across China, ensuring fast delivery and service coverage nationwide.
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What is your company's market position in China?
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We position ourselves as a benchmark brand for green wall & floor integrated system building materials in China. We are recognized as one of the largest self-leveling cement production enterprises in the country, with a repeat buyer rate of 80%-100% (BV-verified). Our products have been used in landmark projects such as the Hong Kong-Zhuhai-Macao Bridge artificial island, Wuzhen World Internet Conference Center and Gree Technology Exhibition Center.
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What major projects have you supplied materials for?
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We are proud of our track record: Hong Kong-Zhuhai-Macao Bridge artificial island, Wuzhen World Internet Conference Center, Gree Technology Exhibition Center, Guangzhou Vanke Xincheng (110,000 m2 renovation leveling for wooden floors), Guangxi Minzu University (40,000 m2 sports flooring), Beijing BBMG Dachengjun residential project, Hefei 7-building project, Nanhai Lishui Hospital and Sunshine City Yuelan Mansion underfloor heating project. These cases demonstrate our capability in government, commercial and residential sectors.
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Do you have export experience?
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Yes. Our export experience spans about 10 years, and we have a dedicated foreign trade team of 7 staff members. We support FOB, CIF, CFR and EXW terms, and work with buyers worldwide. We also exhibit at international trade shows such as CGFF (China Flooring & Surface Fair) to connect with global customers. If you tell us your target market, we can recommend the right product grades and packaging for local standards.
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What is your company philosophy and service commitment?
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Our company adheres to the principle of 'excellent materials, high responsibility, and pursuit of perfect craftsmanship'. We follow five core operating standards: quality compliance, nationwide efficient delivery, digital technology empowerment, and low-carbon green production. All our products are zero VOC-added and meet national green low-carbon building material testing standards. We treat every customer as a long-term partner, not a one-time deal.
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What certifications does your company hold?
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Our company holds ISO 9001:2015 (quality management), ISO 14001 (environmental management) and ISO 45001:2018 (occupational health & safety) certifications, all verified by third-party agency BV. On Alibaba.com, we have passed the Onsite Check verification, confirming our legal business status. We are also a Diamond Member and Audited Supplier on Made-in-China.com.
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Do you have ISO 9001 certification?
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Yes, we are certified under ISO 9001:2015 for quality management systems. Our production follows standardized procedures with dedicated personnel responsible for each process, and raw materials and finished products undergo strict inspection to ensure 100% qualified output. We can share our certificate on request.
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Have you been audited by third-party verification agencies?
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Yes. On Alibaba.com we have completed the Onsite Check - the supplier was visited on site and legal status was confirmed by a third-party verification company. On Made-in-China.com, our company profile (9 items including business type, production capacity and trade capacity) has been verified by Bureau Veritas (BV), with audit report No. MIC-ASR264706 available for buyers to check.
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Do your products have CE certification?
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Our products are manufactured to meet the technical performance requirements commonly applied in European construction projects, including high strength grades (up to 42.5 MPa), fire resistance and low VOC characteristics. However, CE marking for specific product lines is under confirmation - please contact our sales team to check the latest certification status for your target market before ordering. [TBC]
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Are your products environmentally friendly?
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Yes. All our products are zero VOC-added, which means no volatile organic compounds are added during production, and they meet the national green low-carbon building material special testing standards in China. This makes our self-leveling cement and adhesives suitable for indoor applications such as homes, schools, hospitals and offices where air quality matters.
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Do your products have fire resistance certification?
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Some of our product lines offer high fire resistance - for example, our self-leveling refractory decorative concrete is designed with fire resistance class A1 (non-combustible), the highest fire classification for building materials. Please specify the fire rating requirement for your project so we can recommend the appropriate product and share the relevant test documentation. [TBC for specific batch test reports]
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Can you provide test reports for your products?
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Yes, we can provide test reports for our products. We operate a self-developed standard laboratory system, and both raw materials and finished products undergo routine inspection (visual and functional inspection) before shipment. Please let us know which product and which test items (strength, hardness, drying time, etc.) you need, and we will arrange the reports for you.
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Do your products comply with REACH or other EU regulations?
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We pay close attention to environmental compliance requirements in export markets. Our products are zero VOC-added, and our production system follows ISO 14001 environmental management standards. For specific compliance certificates such as REACH registration for your target country, please confirm with our sales team before ordering so we can verify the latest compliance status. [TBC]
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What is your quality control system?
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Our quality control covers the full chain: (1) raw materials are traceable and inspected upon arrival; (2) each production step follows standard operating procedures with dedicated personnel; (3) finished products undergo random inspection including visual and functional testing by 2 full-time QA/QC inspectors; (4) we keep batch records for traceability. This system is certified under ISO 9001:2015.
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Are your raw materials traceable?
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Yes, full traceability of raw materials is confirmed in our BV audit. We source from established, qualified suppliers (20 supply chain partners) and keep detailed records of each batch. This traceability, combined with our in-house formula development, allows us to maintain consistent product quality and quickly respond to any quality issues.
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What is self-leveling cement and how does it work?
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Self-leveling cement is a special dry-mix mortar made of cement (or gypsum), fine aggregates and polymer additives. When mixed with water, it forms a highly fluid slurry that spreads and levels itself under gravity, creating a smooth, flat surface without heavy manual troweling. It is widely used to level floors before installing wood flooring, PVC/LVT flooring, carpet, or before applying epoxy and other decorative coatings.
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What is the strength of your self-leveling cement?
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We offer a wide range of strength grades to match different applications: K20 wood-floor grade reaches 18-20 MPa; our gypsum-based K30 and commercial grades typically reach 20-25 MPa; the industrial-grade high-strength series reaches up to 42.5 MPa (hydraulic silicate cement). For example, our Languan K30 self-leveling on Alibaba.com is rated at 20 MPa compressive strength with rapid hardening. Tell us your project requirement and we will recommend the right grade.
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What thickness can your self-leveling cement be applied?
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Our products have a thickness range of 2mm-40mm. If you have special requirements, you can also contact us and we can customize a thicker self-leveling compound for you.
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What is the difference between cement-based and gypsum-based self-leveling?
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Cement-based self-leveling (e.g. K20/K50/K80) is stronger, more moisture-resistant and suitable for wet areas, industrial floors and as a base for most floor coverings - it dries with higher compressive strength (up to 42.5 MPa). Gypsum-based self-leveling (e.g. K30) offers superior flowability, faster drying and is ideal for interior leveling over screeds, underfloor heating infill and wood-floor bases in dry indoor areas, but should not be used in continuously wet environments. We can advise the best type for your specific project.
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Do you offer colored self-leveling cement?
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Yes! Colored self-leveling cement is one of our specialty products. We offer various decorative colors that can be used for polished/concrete-look floors, art flooring, retro flooring and ink-wash style floors without additional coatings. We can also customize colors to match your design requirements. This is a cost-effective way to create decorative concrete floors with a smooth, seamless finish.
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What is your tile adhesive and what standards does it meet?
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We manufacture cement-based tile adhesives in multiple grades (YT1, YT2, YT3) designed for different tile types and substrates: our high-strength rapid-setting tile adhesive is ideal for kitchen walls, exterior facades and water-resistant applications; our high-flexibility stone mosaic tile adhesive is specially formulated for swimming pools, large-format tiles and areas requiring strong bond and flexibility. Please tell us your tile type, size and substrate so we can recommend the right class.
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Do you offer waterproof self-leveling cement?
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Yes, we offer waterproof self-leveling cement in our product range, suitable for areas requiring moisture resistance. We also offer polymer waterproofing mortars (G1, G2 series) for wet-area protection. For swimming pool areas or continuous water exposure, our high-flexibility tile adhesive plus waterproofing system is the recommended solution - please share your project details for a tailored recommendation.
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What is your quick repair mortar?
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Our polymer multi-functional quick repair mortar is designed for fast repair of damaged concrete floors: it sets quickly and can be opened to traffic in as little as 3 hours, and self-leveling mortar can be applied over it the same day. It comes in multiple grades (A45, PP, K12 wall/floor versions) for different repair depths and conditions - from shallow surface repair to deeper structural patching. This greatly reduces downtime for warehouses, garages and industrial facilities.
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What is non-shrink grout used for?
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Our high-strength non-shrink grout (H60/H80/H90 series) is used for precision filling and load transfer applications: machinery baseplates and equipment anchoring, structural column and beam joints, pre-cast element connections, and bridge bearing installation. It expands slightly during curing to fill gaps completely without shrinkage, ensuring tight contact and high load-bearing capacity. We can recommend the right grade based on your gap size and strength requirement.
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Do you offer lightweight or thermal insulation self-leveling?
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Yes, we offer lightweight self-leveling solutions: K31 lightweight thermal insulation EPS particle self-leveling and K32 lightweight glass bead self-leveling concrete. These products reduce floor dead load, provide thermal insulation and can freely control the construction thickness - ideal for renovation projects, high-rise buildings where weight matters, and energy-saving floor systems. They combine leveling and insulation in one application step.
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What is the coverage rate of your self-leveling cement?
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Coverage depends on the applied thickness. As a general guide, cement-based self-leveling consumes approximately 1.5-1.8 kg per square meter per millimeter of thickness (typical density ~1.5 t/m3); lightweight grades consume less per mm. For example, a 5 mm layer needs about 7.5-9 kg/m2. We will calculate the exact quantity for your project based on area and required thickness, and recommend adding 5-10% margin for waste.
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What is the drying/hardening time of your products?
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Setting and drying times vary by product grade: our rapid-hardening series sets quickly and our quick repair mortar can open to traffic in 3 hours; rapid-setting self-leveling grades harden fast enough for same-day follow-up work in many cases. Standard grades typically allow foot traffic within a few hours and floor covering installation within 24-48 hours depending on thickness and ambient conditions. We provide detailed curing guidance with each product for optimal results.
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Can your products be used for underfloor heating?
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Yes. Our gypsum-based K30 self-leveling is specifically suitable for underfloor heating infill - it has high fluidity, can fully encapsulate heating pipes, and its thermal properties work well with heating systems. Our K20 wood-floor grade and other leveling products can also be used above heating systems in appropriate thicknesses. We have completed projects such as the Sunshine City Yuelan Mansion underfloor heating leveling project. Please share your system details for proper product selection.
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What is the fire resistance rating of your products?
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Our self-leveling refractory decorative concrete is designed with A1 fire resistance (non-combustible), the highest classification for construction materials - suitable for industrial floors, public buildings and other applications with strict fire safety requirements. Cement-based products in general offer excellent fire performance as inorganic materials. If your project specifies a particular fire class, please let us know so we can confirm the matching product and provide test documentation. [TBC for batch reports]
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Do you offer epoxy self-leveling systems?
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Yes, we offer two-component epoxy systems including our epoxy ultra-fine natural sand self-leveling compound, which is waterproof, wear-resistant and creates a smooth decorative finish. Our product range also includes water-based epoxy and water-based polyurethane floor materials for different performance and environmental requirements. Epoxy systems are ideal for garages, showrooms, labs and areas requiring chemical resistance and easy cleaning.
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Do you offer OEM/ODM services?
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Yes, we offer both OEM and ODM services (BV-verified). OEM: we produce our standard formulas under your brand name and packaging. ODM: we can develop new formulas and solutions based on your requirements or samples. Our customization options include customization from samples, from designs, full customization, minor customization and flexible customization. Our R&D team (2 dedicated R&D engineers plus 18 material engineers) supports your project from concept to production.
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Can you customize packaging?
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Yes, we can customize packaging to meet your requirements: bag size (e.g. 20kg/25kg standard export bags or custom weights), bag material (paper-plastic composite, woven PP with inner lining, etc.), printing (your logo, brand colors, multilingual labels, barcodes), and palletization. Our standard export packaging is designed for long-distance ocean shipping with moisture protection. Share your packaging spec and we will produce samples for approval first.
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Can you develop new formulas for us?
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Yes, ODM formula development is one of our strengths. Our R&D team can develop new formulas based on your target performance (strength, setting time, color, lightweight, waterproof, etc.), your sample product, or local market requirements (e.g. climate-adapted formulations). We have established strategic cooperation with multiple well-known universities for material research. Development typically starts with lab samples, then pilot production, then mass production.
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Can you provide samples for testing?
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Yes, we provide samples for testing and evaluation. For standard products, samples are available with sample service supported on our platforms. Please tell us which product and quantity you need for testing - we will arrange sample dispatch and can provide technical data sheets (TDS) together with the samples so your team can evaluate performance properly.
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What is your MOQ for customized products?
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For standard products our MOQ is flexible - on Alibaba.com listings, MOQ starts from 200 bags for many items (and from 500 kg per our BV-verified trade profile). For OEM/ODM customized products, the MOQ depends on the complexity of customization (packaging, formula, color) - typical MOQ ranges from 1,000 to 5,000 bags, or about 1 container. Please share your customization plan and target quantity so we can give you the exact MOQ and best pricing.
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Can you match specific color requirements?
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Yes, colored self-leveling is our specialty. We can produce a wide range of colors and match specific shades for decorative flooring projects. Color matching can be done from your sample, from a RAL/Pantone reference, or from photos of your target finish. Please note that slight color variation between batches is normal for cement-based products - we recommend ordering full project quantities in one batch to minimize variation.
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Do you offer private label production?
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Yes, private label production is part of our OEM service. We can print your brand name and logo on the packaging, provide product labels in your language, and adjust technical documentation (TDS, MSDS) under your brand where applicable. You own the brand; we handle the manufacturing, quality control and logistics. This is a popular model for distributors and construction material brands entering the flooring market.
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Can you adjust formulas for specific climates or markets?
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Yes, formula adaptation is part of our ODM capability. We can adjust formulations for specific climate conditions - for example, faster-setting versions for cold weather construction, extended open time for hot climates, or higher moisture resistance for tropical regions. We can also adapt products to local standards and construction practices in your market. Share your market and climate conditions, and our R&D team will recommend or develop the right formula.
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How long does sample development take?
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Timeline depends on complexity: standard product samples can be arranged within a few days; packaging customization samples typically take 7-15 days; new formula development (ODM) from scratch usually takes 3-6 weeks including lab testing and pilot production. We will confirm a detailed timeline after understanding your requirements. During development we keep you updated at each milestone.
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Do you protect customer designs and formulas?
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Absolutely. We treat all customer designs, formulas, brand materials and commercial information as confidential. For OEM/ODM projects, we can sign a Non-Disclosure Agreement (NDA) before sharing technical details. Our production team follows strict confidentiality practices, and proprietary formulas developed for a customer are never supplied to other buyers.
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What is your production lead time?
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The average lead time for standard production orders is approximately one week (BV-verified lead time is approximately one week for both peak and off-peak seasons). Lead time for small trial orders on the international platform can be as short as 3 days (e.g., 1-20 bags). The exact lead time depends on the order quantity, product type, and current production schedule—we will confirm the delivery date in the contract and continuously update you on the progress during production.
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What is your production capacity?
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As one of the largest self-leveling cement producers in China with a nationwide multi-base production network (11 production bases), we have strong combined capacity. Our BV-verified profile confirms dedicated production lines with a plant area of 13,300 m2. For specific monthly capacity figures by product line, please contact our sales team - we will confirm current capacity and production scheduling for your order volume. [TBC for exact monthly tonnage]
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How do you manage large orders?
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Large orders are managed through our multi-base production system: orders are allocated across production bases to optimize capacity and delivery, and our nationwide warehouse network (600 agents and inventory centers) supports flexible staging. We provide production progress reports at agreed milestones and coordinate shipping arrangements in advance. Our Alibaba.com on-time dispatch performance is strong (recent listings show on-time dispatch rates around 75%-100% by product page).
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Can you handle urgent orders?
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We can prioritize urgent orders where production capacity allows - our rapid-hardening products themselves are designed for speed, and our nationwide bases allow flexible scheduling. For urgent small quantities, lead time can be shortened significantly. Please inform us of your required delivery date at the inquiry stage so we can check the production schedule and confirm feasibility before accepting the order.
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What is your production process?
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Our production process follows a standardized flow: (1) raw material procurement and incoming inspection (with traceability records); (2) batching according to our formula (special cement/gypsum, fine aggregates, imported polymer spray-dried resin and additives); (3) mixing and homogenization on automated production lines; (4) packaging (standard or customized bags); (5) finished product random inspection (visual & functional); (6) warehousing and shipment. Each step has dedicated responsible personnel, ensuring consistent quality.
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How do you ensure consistent quality across batches?
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Consistency is ensured by: (1) standardized formulas locked in our production system; (2) raw material quality control and traceability; (3) ISO 9001:2015 certified process management with dedicated personnel per step; (4) finished product random inspection per batch; (5) batch records kept for traceability. If you order repeat batches, we recommend referencing the same formula version to maintain consistency. For colored products, order full quantities in one batch to minimize color variation.
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What is your on-time delivery rate?
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Our Alibaba.com store shows strong delivery performance - for example, our K30 product page displays an on-time dispatch rate of 100% or above, with a response time of 7 hours or less (store response rate 88.33%). We take delivery commitments seriously: confirmed delivery dates are written into contracts, and our multi-base system provides flexibility to meet schedules even during peak seasons.
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Can I visit your factory?
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Yes, we welcome factory visits and audits. You can book a factory tour through our Made-in-China.com profile (360° virtual tour also available), or arrange a visit directly with our sales team. Our production bases are located in multiple cities including Huzhou (Zhejiang), Dongguan (Guangdong) and others - we can arrange the most convenient visit for you, including production line walkthrough, laboratory inspection and sample testing.
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What is your price range for self-leveling cement?
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Our prices vary by grade, packaging and order quantity. As a reference from our Alibaba.com listings: standard self-leveling cement ranges from about USD 5 to 10 per bag, our Languan K30 rapid-hardening grade is around USD 3.50 per bag, and specialty products like epoxy self-leveling are priced per barrel. For an accurate FOB/CIF quotation, please share your product grade, quantity, packaging and destination - we will provide a detailed quotation within 24 hours. [TBC for current spot prices]
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Can you provide a quotation (FOB/CIF)?
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Yes, we provide quotations under FOB, CIF, CFR and EXW terms (all BV-verified trade terms). For a complete quotation please provide: product model and grade, quantity (bags or tons), packaging requirement, destination port (for CIF/CFR), and payment terms preference. We will reply with a detailed price list including unit price, total amount, and estimated shipping cost within 24 hours.
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What is your MOQ?
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Our MOQ is flexible depending on the product: many products on Alibaba.com start from 200 bags (e.g. K30, tile adhesives), and our BV-verified trade profile lists 500 kg as the minimum order quantity. For OEM/ODM custom products, MOQ is typically higher (1,000-5,000 bags or about one container) due to production setup. We also welcome trial orders to test product quality before scaling up.
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What payment terms do you accept?
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We accept multiple payment methods: T/T (telegraphic transfer), L/C (letter of credit), D/P, PayPal, Western Union, and small-amount payment platforms. On Alibaba.com, Trade Assurance provides secure payment protection for orders placed and paid through the platform, including money-back protection and on-time shipping guarantees. We can discuss the best payment structure for your order size and market.
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Do you offer discounts for bulk orders?
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Yes, we offer tiered pricing - larger order quantities receive better unit prices because of production and logistics efficiency. Price breaks typically apply at container-level quantities. The exact discount depends on product, volume and market conditions. Please share your target quantity and we will prepare the most competitive volume pricing for you. We can also discuss annual volume agreements for long-term partners.
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Is your price per bag or per ton?
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We can quote either way - per bag (e.g. 20kg or 25kg) or per ton - whichever is more convenient for your calculation. Our Alibaba.com listings typically show price per bag, while bulk quotations are often given per ton. Please tell us your preferred pricing unit and we will quote accordingly, with the conversion clearly shown.
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Do prices include packaging?
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Yes, standard packaging is included in our product prices - export-grade bags (typically 20kg or 25kg paper-plastic composite or lined woven bags) with standard printing. Custom packaging (your logo, special bag material, multilingual labels) may incur an additional charge depending on the design and quantity - we will clearly itemize this in the quotation so there are no surprises.
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Can we negotiate prices?
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We always aim for fair, market-competitive pricing, and we are open to discussing pricing based on order volume, long-term cooperation potential and market conditions. Rather than simply discounting, we look for win-win structures: tiered pricing for volume, annual agreements, combined-product orders, or simplified packaging to optimize your landed cost. Share your target price and volume, and we will work out the best solution together.
Q
What warranty do you provide for your products?
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We stand behind our product quality. Our after-sales service includes return and replacement support (as stated in our Alibaba.com product listings) for quality issues confirmed to be factory faults. The specific warranty terms (coverage period and conditions) are confirmed in the purchase contract for each order, as they depend on product type and application. Please review the warranty terms in your contract or ask our sales team for details.
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What if products arrive damaged?
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If products arrive damaged, please follow this process: (1) take photos of the damaged goods and packaging immediately upon receipt; (2) note the damage on the Bill of Lading or delivery receipt; (3) contact our sales team within 7 days with photos and details; (4) we will investigate and arrange replacement or compensation per the contract terms and insurance coverage. For Alibaba.com orders, Trade Assurance provides money-back protection for damaged or missing shipments.
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Do you provide technical support and installation guidance?
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Yes, technical support is a core part of our service. We provide: (1) technical data sheets (TDS) and application guides for each product; (2) installation guidance documents and videos covering substrate preparation, mixing ratios, application thickness and curing; (3) remote technical consultation with our engineers; (4) on-site guidance in China within 24 hours through our 45 technical sales professionals. For overseas projects, we offer remote support and detailed written guidance.
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What is your return policy?
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Our return policy: quality-confirmed factory defects are handled with return and replacement support per contract. For change-of-mind or order-cancellation situations, please contact our sales team as early as possible - if production has not started, we can usually adjust or cancel the order; if production is complete, we will discuss options based on the situation. Customized (OEM/ODM) products are generally non-returnable once produced, as they are made to your specifications.
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Do you provide on-site technical assistance?
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In China, our 45 technical sales professionals can arrive at project sites within 24 hours for on-site inspection and construction solutions - this is our documented commitment. For overseas projects, we provide remote video guidance, detailed written construction plans and troubleshooting support. For large overseas projects, please discuss site support options with our sales team - we can evaluate feasibility on a case-by-case basis. [TBC for overseas on-site policy]
Q
What if the product has quality problems?
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Quality issues are handled seriously through a structured process: (1) report the issue with photos/samples to our sales team; (2) our engineers analyze the cause - batch records allow us to trace the production details; (3) if confirmed as our factory fault, we arrange replacement or compensation per contract; (4) corrective actions are implemented in production to prevent recurrence. Our goal is to resolve issues quickly and fairly - customer trust is our foundation.
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Do you provide construction training?
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Yes, we can provide training support: (1) written training materials and videos covering mixing, application and curing procedures; (2) online training sessions with our engineers; (3) on-site training for projects in China; (4) for distributors, we can arrange product knowledge training to help your sales team recommend the right products. Training content is tailored to your team's experience level and project types.
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How do you handle customer complaints?
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We have a clear complaint handling process: every complaint is logged with a dedicated account manager, acknowledged within 24 hours, investigated with a preliminary conclusion within 5 working days, and resolved per contract terms. For Alibaba.com orders, Trade Assurance provides an additional protection layer for dispute resolution. You can also rate and review our service - our 5.0/5 rating on Made-in-China.com reflects our commitment to service quality.
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What is your nearest port?
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Our nearest port is Shanghai Port, one of the world's busiest container ports, which offers extensive global shipping routes and frequent sailings. Depending on the production base used for your order, we can also arrange loading from other major Chinese ports (e.g. Ningbo, Guangzhou) for logistics optimization. We will confirm the optimal loading port when quoting your order.
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Can you arrange international shipping?
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Yes, we handle international shipping arrangements. We export worldwide with about 10 years of export experience, working with reliable freight forwarders for ocean freight (FCL/LCL), and can arrange air freight for urgent samples. As a manufacturer with regular export volumes, we have competitive freight rates and can provide FOB, CIF, CFR or EXW options. Tell us your destination port and quantity, and we will arrange the best shipping solution.
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What incoterms do you support?
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We support FOB, CIF, CFR and EXW (all BV-verified). These cover most international trade needs. For other terms such as DDP or DAP, please discuss with our sales team - we can evaluate on a case-by-case basis depending on destination and order size. [TBC for DDP availability]
Q
How do you package products for export?
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Our export packaging is designed for long-distance ocean shipping: (1) products are filled in 20kg or 25kg moisture-protected bags (paper-plastic composite or lined woven PP); (2) bags are palletized and stretch-wrapped for stability; (3) pallets are marked with product, batch and shipping marks; (4) container loading follows proper weight distribution to protect the goods. Custom packaging is available for OEM/ODM orders.
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What are the shipping costs?
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Shipping costs depend on destination port, container type (20GP/40HQ), weight/volume and current freight market rates. We will provide an accurate shipping cost estimate together with your quotation for CIF/CFR terms, based on real freight quotes from our forwarders. For FOB/EXW terms, shipping is arranged by you or your forwarder - we are happy to provide packing details and container loading calculations to help you plan.
Q
Can you ship to my country?
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We export worldwide and ship to most countries with regular ocean routes. Our export experience covers global markets, and we exhibit at international trade shows to serve customers worldwide. Please tell us your country and destination port - we will confirm the shipping options, available routes, transit time and estimated freight for your location.
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Do you provide shipping documents?
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Yes, we provide a complete export document set: Commercial Invoice, Packing List, Bill of Lading, and certificates as applicable (Certificate of Origin, etc.). For L/C payments, we prepare documents strictly per L/C requirements. Product-related documents (test reports, TDS, MSDS) are available upon request. We ensure documents are accurate and consistent to avoid customs clearance delays.
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What is the shelf life and storage requirement of your products?
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Our dry-mix products have a typical shelf life of 6-12 months from the production date when stored properly. Storage requirements: (1) keep bags in a dry, ventilated warehouse; (2) store on pallets off the ground, away from walls; (3) avoid direct contact with moisture and rain; (4) keep the bags sealed until use. Following these guidelines ensures the products perform as designed. We print the production date and shelf life on each bag.
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Why should we choose Languan over other suppliers?
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Here's why buyers choose us: (1) Real manufacturer - we own multiple production bases nationwide with direct control over quality and cost; (2) Full product range - one-stop supply for self-leveling, adhesives, primers, repair mortars and more; (3) Verified credibility - ISO 9001/14001/45001 certified, BV-audited, Onsite Check passed on Alibaba.com; (4) Proven projects - Hong Kong-Zhuhai-Macao Bridge artificial island, Vanke, Gree and other landmark references; (5) Strong service - 24-hour response, technical support, and OEM/ODM capability; (6) Competitive pricing with flexible MOQ.
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What makes your products different from others?
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Our products stand out through: (1) high-performance formulas using imported polymer spray-dried resin and premium raw materials; (2) full-chain quality control with batch traceability; (3) zero VOC-added formulations meeting green building standards - safe for indoor use; (4) a complete thickness and strength range (18-42.5 MPa) covering civil, commercial and industrial needs; (5) special solutions like lightweight EPS/glass bead self-leveling, colored self-leveling and A1 fire-resistant grades. We continuously upgrade formulas through university cooperation and in-house R&D.
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Do you have a price advantage?
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As a manufacturer selling directly, we eliminate middleman markup, which allows us to offer competitive pricing - our Alibaba.com prices for self-leveling cement start around USD 3.50-5 per bag depending on grade. Beyond the unit price, our value proposition includes consistent quality, reliable delivery and technical support, which reduces your total cost of ownership (fewer complaints, less waste, faster project completion). We welcome you to compare our quotation with other suppliers.
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What is your R&D capability?
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Our R&D capability includes: (1) 2 dedicated R&D engineers (BV-verified) plus 18 material engineers with R&D and construction guidance expertise; (2) a self-developed standard laboratory system for formula testing; (3) strategic cooperation with multiple well-known universities; (4) a proven track record of launching innovative products - from colored self-leveling to lightweight EPS particle systems, waterproof self-leveling and A1 fire-resistant grades. We also perform ODM development for customer-specific requirements.
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Do you have references from major projects?
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Yes, our project references include: Hong Kong-Zhuhai-Macao Bridge artificial island, Wuzhen World Internet Conference Center, Gree Technology Exhibition Center, Guangzhou Vanke Xincheng (110,000 m2), Guangxi Minzu University (40,000 m2), Beijing BBMG Dachengjun, Nanhai Lishui Hospital, Hefei 7-building project and Sunshine City Yuelan Mansion underfloor heating project. These projects span government infrastructure, commercial landmarks and residential development, proving our capability across sectors.
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What is your customer service advantage?
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Our customer service is built around responsiveness and technical depth: (1) fast response - our Alibaba.com response time is within 7 hours (response rate 88.33%), and we reply to quotations within 24 hours; (2) 45 technical sales professionals providing on-site support in China within 24 hours; (3) complete technical documentation (TDS, MSDS, application guides); (4) dedicated account manager for every customer; (5) 5.0/5 buyer rating on Made-in-China.com with a repeat buyer rate of 80%-100%.
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Do you have overseas agents or branches?
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Currently we do not have overseas agents or branches (per our BV-verified profile), but we serve international customers directly with full export support - documentation, shipping, and remote technical assistance. We are actively developing our overseas channel network (including participation in international exhibitions like CGFF). We welcome distributors and agents who are interested in representing our brand - let us know your market and we can discuss cooperation.
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What is your competitive advantage in technology?
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Our technological edge includes: (1) formulas developed with imported polymer spray-dried resin technology for superior flow, strength and crack resistance (e.g. K20 with wood fiber reinforcement for crack resistance); (2) full product matrix from basic leveling to high-end systems (lightweight insulation, colored decorative, A1 fire-resistant, waterproof grades); (3) an in-house laboratory system and university cooperation for continuous innovation; (4) 'German technology, international quality' as our brand commitment - we benchmark against international quality standards in product development.
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Which product do you recommend for wooden floor installation?
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For wooden floor installation we recommend our K20 wood-floor special self-leveling cement: it reaches 18-20 MPa strength, can be applied at 3-10 mm thickness, contains wood fiber reinforcement for crack resistance, and creates the perfectly flat, smooth base that wood flooring requires. It is suitable for wood flooring, SPC flooring and carpet installation. For best results, apply our LG660/LG670 interface primer before leveling to ensure proper adhesion.
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Which product do you recommend for warehouse/industrial floors?
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For warehouse and industrial floors we recommend our high-strength industrial series: the 42.5 MPa hydraulic silicate self-leveling or K80 ultra-high-strength grade, which withstand heavy loads and are suitable for auto repair shops, warehouses, public buildings, offices and light industrial assembly floors. For damaged industrial floors, use our polymer quick repair mortar first (open to traffic in 3 hours), then level with the high-strength grade. For new decorative industrial floors, our A1 fire-resistant self-leveling refractory decorative concrete is an excellent choice.
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Which product do you recommend for underfloor heating?
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For underfloor heating systems we recommend our gypsum-based K30 self-leveling: it has high fluidity to fully encapsulate heating pipes, high plasticity, and is specifically suitable for underfloor heating infill, home renovation leveling and commercial office backfill. It provides a smooth base ready for final floor coverings. We have completed underfloor heating projects such as Sunshine City Yuelan Mansion. Please share your system details (pipe spacing, cover thickness) for confirmation of the right grade.
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Which product do you recommend for old floor renovation?
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For old floor renovation we offer a complete system: (1) LG180 concrete floor sanding and curing agent for dusting/soft floors - a special acrylic + silicone treatment that hardens and seals the surface; (2) polymer quick repair mortar for damaged areas; (3) standard or thick-layer self-leveling for overall leveling; (4) interface primer for proper bonding. Our project record includes Guangzhou Vanke Xincheng (110,000 m2 renovation leveling). We can provide a complete material list and guidance for your renovation project.
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Which product do you recommend for underground garages?
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For underground garage floors we recommend: (1) high-strength self-leveling cement (20-42.5 MPa grades) to create a durable, level base; (2) our super wear-resistant floor seal hardener (L100) or seal curing agent for concrete surfaces to resist vehicle wear and dusting; (3) for decorative or marked areas, colored self-leveling or water-based epoxy systems for a clean, easy-to-clean finish. Garages require high wear resistance and moisture tolerance - our cement-based systems perform well in these conditions.
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Which product do you recommend for hospitals and schools?
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For hospitals and schools, indoor air quality and hygiene are critical - our zero VOC-added products are ideal. We recommend: (1) standard commercial self-leveling (K40/K50) or K20 for a smooth, flat base; (2) followed by PVC/LVT flooring bonded with our water-based adhesives (LG850/LG880), which are low-odor and safe for indoor use. Our references include Nanhai Lishui Hospital and Guangxi Minzu University (40,000 m2). All materials meet green building standards suitable for sensitive environments.
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Which product do you recommend for swimming pools and wet areas?
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For swimming pools and wet areas we recommend our high-flexibility stone mosaic tile adhesive, specially formulated for swimming pools, large-format tiles and areas requiring strong bond, water resistance and flexibility (to accommodate thermal movement). For bathroom floors and wet rooms, combine waterproofing mortars (G1/G2 series) with high-flexibility adhesive for complete protection. Please share your project details (tile type, substrate, water exposure) for a tailored system recommendation.
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Which product do you recommend for exterior facades?
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For exterior facades we recommend our high-strength rapid-setting cement-based tile adhesive, designed for exterior walls with water resistance and high bond strength. For exterior ground leveling or steps, use appropriate cement-based grades with frost resistance considerations for cold climates. Please confirm your substrate, tile type and local climate - exterior applications have strict requirements (water resistance, freeze-thaw resistance, bond strength), and we will recommend the right grade with technical documentation.
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What is the difference between self-leveling and regular cement?
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Self-leveling cement is a specially engineered dry-mix product: it contains polymer additives and carefully graded aggregates that create a highly fluid, self-spreading slurry when mixed with water, automatically forming a smooth, level surface. Regular cement mortar is stiff, requires manual troweling, and cannot achieve the flatness or thin application (3-10 mm) that self-leveling achieves. Self-leveling also dries faster, has higher surface strength, and creates a better base for floor coverings - which is why professional flooring installations use self-leveling systems.
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What are EN 13813 and EN 12004 standards?
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EN 13813 is the European standard for screed materials and floor screeds - it classifies self-leveling/screed products by performance (e.g. compressive and flexural strength classes like C20, C25, C30, and SR classes for surface hardness). EN 12004 is the European standard for ceramic tile adhesives, classifying them by type (C=cementitious, D=dispersion, R=reaction resin) and performance (1=normal, 2=improved). These standards help buyers compare products objectively. We manufacture products designed to meet these performance requirements - tell us your required class and we will match the product.
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What does CE marking mean for construction products?
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CE marking indicates a product complies with EU harmonized standards and can be legally sold in the European Economic Area. For construction products, CE marking falls under the Construction Products Regulation (CPR, EU 305/2011) and requires a DoP (Declaration of Performance) plus factory production control. CE is required for certain product categories in EU projects - including some screed and adhesive applications. If your market requires CE-marked products, please tell us the product and standard - we will confirm the certification status and options for your order. [TBC for CE availability]
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Why is primer important before applying self-leveling?
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Primer (interface agent) is essential for a successful self-leveling application: (1) it seals porous substrates, preventing air bubbles and water loss from the slurry; (2) it improves adhesion between the substrate and the self-leveling layer, preventing delamination; (3) it equalizes suction across the surface for consistent drying. Our LG660/LG670/LG680/LG690 water-based primers cover different substrate conditions - non-absorbent surfaces (LG670) and absorbent surfaces (LG660). Skipping the primer is the most common cause of self-leveling failure - we always include it in our system recommendations.
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What is the moisture requirement for floor substrates?
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For cement-based screeds, the substrate moisture should typically be below 4.5% CM (carbide method) before installing moisture-sensitive floor coverings like wood or PVC; for self-leveling application itself, the substrate should be sound, dry and free of dust/laitance. For gypsum-based substrates, moisture limits differ. We recommend performing a moisture test (CM test or hygrometer) before installation - if moisture is too high, use proper drying time or moisture barrier systems. Our technical team can advise the right approach for your site conditions.
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What is A1 fire resistance classification?
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A1 is the highest fire classification under EN 13501-1 (European classification for construction products): A1 materials are non-combustible and do not contribute to fire at any stage. Inorganic materials like cement, concrete, gypsum and mineral products can achieve A1 classification. Our self-leveling refractory decorative concrete is designed with A1 fire resistance, making it suitable for industrial floors, public buildings and areas with strict fire safety requirements. If your project specifies fire classes, always confirm the exact classification with the product test report. [TBC for batch reports]
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What are the common problems in floor leveling projects?
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Common self-leveling problems and prevention: (1) cracking - caused by wrong thickness range, missing primer, or rapid drying; (2) delamination/bubbles - missing or wrong primer on porous substrates; (3) uneven surface - incorrect water ratio or mixing; (4) dusting - low-strength mix or over-troweling; (5) poor adhesion - dirty or weak substrate. Prevention is systematic: proper substrate preparation (clean, sound, primed), correct water ratio per TDS, appropriate thickness range, and proper curing conditions. Our technical team provides full application guidance to help you avoid these issues.
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How do I choose between cement-based and gypsum-based self-leveling?
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Choose based on your application: (1) Cement-based (e.g. K20/K50/K80) - choose for higher strength (up to 42.5 MPa), moisture-exposed areas, industrial floors, exterior or wet areas, and as a base for all floor coverings; (2) Gypsum-based (e.g. K30) - choose for interior dry areas, underfloor heating infill, fast drying schedules, and wood-floor bases where flowability and speed matter. As a rule: when in doubt for wet or high-load areas, go cement-based; for fast, smooth interior leveling, gypsum-based is excellent. Our sales engineers will help you select the right system for your project conditions.