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composite decking



Every kind of product has an extraordinary soul, and every kind of process contains the spirit of craftsmanship. We are committed to producing the best composite decks.

COOWIN's story began in 2000 as one of the first composite decking brands in China. The founder, Mr. Leo, invested a lot of money and energy in introducing formulas and technologies from the US. Then, this small factory has grown step by step to become one of the most well-known wood-plastic enterprises in China.

At present, COOWIN’s self-developed formula has obtained national patents, and each raw material has strict physical and chemical indicators; the production equipment specially designed for COOWIN has been put into use.

Main Composition Information

Item(s) Description(s) Content
Wood fiber 80 mesh white poplar wood fiber 50%
Plastic particle High quality HDPE plastic resin 38%
Additives 1) Light stabilizer
2) Anti-UV additive
3) Anti-Aging additive
4) Coupling Agents
5) Color pigment


As a product for outdoor use, COOWIN has high requirements for product performance. In addition to meeting the basic needs of most of the world, COOWIN’s R&D department has developed special wood-plastic products for extreme weather such as extreme temperatures, high humidity and strong corrosiveness to meet the needs of special application. [About R&D]

Physical and Chemical Properties

Item(s) Test Result(s) Test Method(s)
Density 1.33g/cm3 ASTM D792-00
Moisture Content 0.2% ASTM D7031-11 Section 5.15
ASTM D4442-16 Method B
Screw withdrawal test 3353N ASTM D7032-17 Section 5.5
ASTM D1761-12
Impact Resistance >133J ASTM D4495-16
Specific Gravity 1.31 ASTM D7031-11 Section 5.14
ASTM D792-13 Method A
Shore Hardness D/70/1 ASTM D2240-15
Mouldproof level 0[1] ASTM G 21-15
Formaldehyde Emission 0.02ppm[2] ASTM D6007 -14
Soluble heavy metal ND[3] ASTM F963- 16(Clause 8.3)
Fire-Proof Level Bf1 EN ISO 9239-1:2010
EN ISO 11925-2:2010+AC:2011
[1] Mold rating standard: 0 — No mildew or discoloration on the surface [2] 1 ppm = 1 mg/kg = 0.0001% [3] ND = Not detected ( < Method detection limit )


Always satisfying the ever-changing needs of our customers is COOWIN's commitment to products. COOWIN is committed to being the best composite decking brand.

3D Wood Grain, Capped Decking, Mix Art Color System.....Not only does it provide a high level of quality assurance, but new products and technology are constantly being developed that make COOWIN always at the forefront of the market.