... ideal for outdoor wall cladding Product introduction: WPC foaming out-door wall cladding series include sidings board, sunshading ... 20% additives such as coupling agent,reinforcement agent,anti-UV agent,stabilizing agent,foamimg agent,foaming adjusting agent etc.its made by extruding ... -fading).2,Two typical types:wpc free foaming,wpc encrusted foaming.3,Its water-proof,anticrash,flame retardant ...