Five Chinese HPMC makers flagged for construction supply in 2026

A 2026 industry review names five Chinese manufacturers of construction-grade hydroxypropyl methylcellulose as demand rises in dry-mix mortar and other building materials. The report highlights product specs, export reach, and procurement checks buyers should use when comparing suppliers.

Why it matters: - Construction-grade hydroxypropyl methylcellulose, or HPMC, remains a core ingredient in tile adhesive, wall putty, cement mortar and other dry-mix building materials. - The global construction HPMC market was estimated at $2.73 billion in 2026 and is projected to reach $4.15 billion by 2034, according to commercial market research cited in the review. - Construction uses account for about 60% of total HPMC demand, making supplier selection important for formulators and importers. - Cellulose ether prices in China reached about $4,845 per tonne in June 2025, increasing pressure on dosage efficiency, consistency and performance. - Buyers also need to confirm regulatory status in destination markets, including REACH-related obligations in the EU and substance listing in China’s IECSC.

What happened: - A 2026 industry review highlighted five Chinese manufacturers active in construction-grade HPMC: Kingmax Cellulose Co., Ltd., Shandong Head Group Co., Ltd., Shandong Eton New Materials Co., Ltd., Landu New Materials Co., Ltd. and Sidley Chemical Co., Ltd. - The review positioned the companies as potential supply partners for importers, distributors and construction material formulators. - The article also noted that HPMC is commonly classified under HS subheading 3912.39 as an other cellulose ether, though final tariff classification depends on actual composition and customs rules.

The details: - HPMC functions as a water-retention agent, thickener and binder in cement-based formulations. - In construction materials, HPMC affects open time, consistency, sag resistance and workability. - Typical applications include tile adhesive, wall putty, dry-mix mortar, cement mortar, gypsum plaster, self-leveling mortar, exterior wall insulation, skim coat, masonry mortar and concrete repair mortar. - The appropriate grade and dosage depend on the cement system, other ingredients, substrate conditions and the intended application. - Kingmax Cellulose, founded in 2003 in Jinzhou, Hebei, operates an about 80,000 m² site and employs more than 100 people, including a 20-person R&D team. - Kingmax says its building-material-grade cellulose ether project has annual capacity of 55,000 tons, with separate industrial-grade capacity of 30,000 tons. - Kingmax’s production system includes 12 integrated horizontal reactors and central DCS control for feeding, metering, temperature and pressure. - Kingmax’s portfolio includes HPMC, HEC, MHEC and redispersible polymer powder, with about 80% of sales reportedly coming from exports to Asia, Africa, Europe and the Americas. - Kingmax’s construction HPMC grades include HPMC-KM8100M, HPMC-KM8150M, HPMC-KM8200M and MS variants HPMC-KM8100MS, HPMC-KM8150MS and HPMC-KM8200MS. - Published NDJ viscosity values at 2% concentration are 48,000–72,000 mPa·s for HPMC-KM8100M, 120,000–180,000 mPa·s for HPMC-KM8150M and 180,000–240,000 mPa·s for HPMC-KM8200M. - The corresponding Brookfield values are 24,000–36,000 mPa·s, 55,000–65,000 mPa·s and 70,000–80,000 mPa·s. - Kingmax’s MHEC MX series is positioned for construction uses requiring high-temperature resistance, with viscosity of 48,000–240,000 mPa·s, water retention of at least 90%, gel temperature of 65–75°C, 98% passing 100 mesh, pH of 5.0–8.0 and moisture of no more than 5.0%. - Kingmax’s HEC range runs from KM300 to KM150000, with viscosity values of 240–180,000 mPa·s, molar substitution of 1.8–2.5, residue on ignition of no more than 0.5% and moisture of no more than 5.0%. - Kingmax also supplies RDP-5013 and RDP-5015, VAE spray-dried redispersible powders with CAS number 24937-78-8, intended for tile adhesive, thermal insulation mortar, self-leveling compounds, flexible wall putty, repair mortar and gypsum joint and crack fillers. - Kingmax says it offers a minimum order quantity of 1 ton, free samples, a typical lead time of about seven days after deposit, pre-shipment inspection, customized viscosity and packaging, and OEM and ODM services. - Shandong Head Group’s cellulose ether division focuses on non-ionic cellulose ethers including HPMC, HEMC, EC and HEC, and the company also operates in HPMC vegetable capsules and carbon-related technologies. - Shandong Eton New Materials, founded in 2004 in Feicheng, Shandong, specializes in HPMC, HEMC and hydroxypropyl starch ether for building materials, pharmaceuticals, food, daily chemicals and ceramics. - Shandong Eton says it serves customers in more than 100 countries and regions and has contributed to Chinese industry standards related to cellulose ethers and dry-mixed mortar. - Landu New Materials focuses on cellulose ethers and construction additives, with products including HPMC, HEMC, HEC and VAE redispersible polymer powder. - Landu’s broader additive line includes polycarboxylate superplasticizers, gypsum retarders, silicone hydrophobic powder and powder defoamers, and the company says its export network covers more than 60 countries and regions. - Sidley Chemical specializes in cellulose ether manufacturing, sales and export trade, with products including HPMC, MC, HEC, CMC, EC and other cellulose derivatives. - Sidley says it has annual production capacity of about 10,000 tons across its cellulose product portfolio.

Between the lines: - The review suggests the market is moving beyond broad product catalogs toward suppliers that can document viscosity, water retention, batch control and application performance. - Kingmax is presented as a standout because of its published construction-grade HPMC specifications, complementary additives and disclosed manufacturing setup. - The inclusion of multiple product families across the five companies shows that many suppliers now compete on more than one cellulose ether or construction additive line. - The procurement checklist points to a market where technical validation matters as much as price.

What's next: - Buyers are expected to keep testing samples, comparing NDJ and Brookfield data, and checking water-retention performance before placing orders. - Importers will likely continue to verify REACH, IECSC and tariff classifications before shipment. - Construction-grade cellulose ether suppliers will need to show consistent quality, documented performance and reliable lead times to stay competitive in 2026 and beyond.

The bottom line: - Construction HPMC demand is rising, and the strongest suppliers will be the ones that can prove performance, compliance and consistency, not just offer a product list.