... :fencing or railing Outdoor wood plastic composite handrail post product wpc fencing Post Size120x 120m Hollow WPC post MaterialWPC ... , pergola ,platform.flowerbox ect. CertificatesCE , SGS, ISO, ASTM test Quality warranty15years Material: 35%HDPE +55%wood fibre+10%chemical additives ... Better dimensional stability than wood, no wood knots,the product can be made into a variety of colors, the surface ...