Co-extrusion composite decking is made from wood plastic composite core and engineering polymer covering. The covering is like a 360°shield to prevent the core from water, UV, fungus, panting and scratching. By using the shield, Chengcheng’s WPC Decking can avoid problems like color fading, rot, crack, mold. Moreover, Co-extrusion Decking has the advantage of scratching-resistance, stain-resistance, more durable life and more color and wood grain pattern choice.