Cellulose Ether & Construction Additives Manufacturer in China
LANDU manufactures and exports HPMC, HEMC/MHEC, HEC, CMC, redispersible polymer powder and construction additives, mainly for building materials such as tile adhesive, wall putty and dry-mix mortar, and also for paints, coatings and personal care. Factory-direct supply, with TDS, COA and samples on request.
- 20,000 MTHPMC annual capacity
- 15,000 MTHEMC/MHEC annual capacity
- 5,000 MTHEC annual capacity
- 60+Countries supplied
- 3Production bases
HPMC, HEMC/MHEC, HEC, CMC & RDP Products
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HPMCHPMCHydroxypropyl Methyl Cellulose. Delivers excellent water retention, workability, and open time for tile adhesives, skim coats, and dry-mix mortars. -
HEMCHEMC / MHECHydroxyethyl Methyl Cellulose. Offers stable thickening and strong sag resistance, ideal for gypsum plasters, renders, and machine-applied mortars. -
HECHECHydroxyethyl Cellulose. Provides efficient thickening and smooth rheology for water-based paints, coatings, and putty formulations. -
CMCCMCCarboxymethyl Cellulose. Provides thickening, water retention and suspension in putty powder and interior wall materials, for smooth application and stable consistency. -
RDPRDPRedispersible Polymer Powder. Improves bonding strength, flexibility, and crack resistance in tile adhesives, EIFS, and repair mortars.
Construction Additives for Dry-Mix Mortar
NovaStar is LANDU’s range of functional additives for dry-mix mortar, putty and gypsum systems. From hydrophobic powder and defoamer to retarder, starch ether, PP fiber and PCE, each product helps improve workability, water resistance, crack resistance and setting control, with stable quality from batch to batch.
Silicone Hydrophobic Powder
Gives mortar and putty long-lasting water repellency and lower water absorption, ideal for exterior wall finishes and waterproof mortar.
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Powder Defoamer
Quickly removes entrained air bubbles in dry-mix mortar, improving surface finish, density and strength of the hardened product.
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Gypsum Retarder
Extends the setting time of gypsum-based plaster and compounds, giving longer working time and stable, controllable construction.
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Hydroxypropyl Starch Ether
Improves anti-sag, thickening and workability in tile adhesive and putty, and works well together with cellulose ethers.
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Polypropylene Fiber
Reduces shrinkage cracks and improves toughness and impact resistance of mortar and concrete, for more durable surfaces.
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Polycarboxylate Superplasticizer
PCE powder water reducer that improves flowability and strength of mortar while cutting water demand, ideal for self-leveling and high-performance dry-mix mortar.
Get a QuoteCellulose Ethers & Additives for Construction, Coatings and Personal Care
Wall Putty & Skim Coat
EIFS / ETICS
More Applications
Three Brands, One Standard of Quality
Each brand serves a different segment of the construction materials industry, backed by the same R&D, production and quality system.
Our core cellulose ether brand for dry-mix mortar, tile adhesive, putty and skim coat, delivering stable water retention, workability and open time.
- Hydroxypropyl Methyl Cellulose (HPMC)
- Hydroxyethyl Methyl Cellulose (HEMC/MHEC)
- Sodium Carboxymethyl Cellulose (CMC)
- Hydroxyethyl Cellulose (HEC)
A full range of functional additives that improve strength, water repellency, setting control and defoaming in modern mortar systems.
- Polycarboxylate Superplasticizer
- Silicone Hydrophobic Powder
- Gypsum Retarder
- Powder Defoamer
- Hydroxypropyl Starch Ether
- Polypropylene Fiber
RDP grades for different flexibility needs, improving adhesion, flexibility and water resistance of cement-based and gypsum-based mortars.
- Flexible grade
- Semi-flexible grade
- Rigid grade
- Hydrophobic grade
Cellulose Ether Factory Built for Reliable, Consistent Supply
Automated production and packaging, built to deliver the same quality in every batch.
From material storage to final packing, our integrated manufacturing system keeps production stable and traceable. Every order is handled with the same standards, so you receive consistent products and dependable supply, shipment after shipment.
Tested Batch by Batch, Backed by Our Lab
Our laboratory is equipped to test key performance indicators such as viscosity, moisture content, particle size and water retention. Each production batch is sampled and checked against specification, so you receive consistent quality in every shipment. Test reports are available on request.
Every product is verified in our in-house laboratory before it leaves the factory.
Quality You Can Trust, Standards You Can Verify
Our commitment to quality, sustainability and regulatory compliance is reflected in internationally recognized standards and independent assessments.
Our certifications:
- ISO 9001:2015: Certified quality management.
- EcoVadis (Bronze): Independent sustainability assessment.
- REACH: Compliance documents available on request.
Committed to every gram.
Meet LANDU at International Building Material Exhibitions
We regularly take part in international industry exhibitions, where we meet customers face to face, discuss their applications and share our latest product developments. These events help us understand market needs and build long-term partnerships with customers across different regions.
Frequently
Asked Questions
LANDU manufactures cellulose ethers (HPMC, HEMC/MHEC and HEC) and construction additives, including redispersible polymer powder (RDP), hydroxypropyl starch ether, polypropylene fiber, polycarboxylate superplasticizer (PCE), gypsum retarder, powder defoamer and silicone hydrophobic powder. Annual capacity is 20,000 MT for HPMC, 15,000 MT for HEMC/MHEC and 5,000 MT for HEC.
Both are used in tile adhesives. The right choice depends on your system class, application conditions and the open time, workability and water retention you need. Our technical team can recommend a starting grade from your formulation. See our guides on HPMC vs HEMC and on choosing HPMC for tile adhesive.
Yes. We provide TDS and COA on request, and samples are available for evaluation. Tell us the product, application and target properties, and we will confirm suitable grades, sample size and shipping arrangements.
LANDU operates under an ISO 9001 quality management system and lists ISO 14001, ISO 45001 and EU REACH compliance. Certificate copies can be provided on request.
We supply customers in more than 60 countries from three production bases. MOQ, packaging and lead time depend on the product and grade. Send us your product, application and expected quantity, and we will reply with a quotation and delivery plan.
Discuss Your Material Requirements with LANDU
Looking for the right additives for your formulation? Whether you need product recommendations, technical information, grade selection or a quotation, our team is ready to help.
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