... 2) lighter and stronger,fire retardant, 3) ideal for outdoor wall cladding Product introduction: WPC foaming out-door wall cladding ... foaming.3,Its water-proof,anticrash,flame retardant(pass B grade),anti-corrosion,UV-protected,sound&thermal insulation and ... stronger,widely used as building decoration,especially for outdoor wall cladding,outdoor flooring and garden ornaments or accessories.5,Passed ...