... fiber(wood powder,bamboo powder,etc)10%additives(Anti-UV agent, Anti-oxidant,stabilizers ,colorants,and etc.)Surface treating methodBrushing, sanding ... Elegant and detailed shape design4. Resistant to cracking and splitting5. Water-proof, moldy-proof, prevents rotting and moisture, anti-acid, alkali ... 35mm,40mm,32mm,80mm,90mm,120mm etc.3.Length: Customized Water proof and Easy to assemble wpc product