... deck ,it's better weather-resistant and (sea) water-resistant outdoor construction CE ,ISO,SGS,ITS approved. 146x25mm WPC ... composite materials,with high strength, impact resistance, non-deformation, water-resistant anti-corrosion, anti-moth, anti-virus effect.d). ... of the wood but no timber problems3. Moisture/Water resistant, proven under salt water condition34. Requires no painting, no glue, low ...