wpc decking board: recycled use.better quality impact-resistance,fire-proof,fading-proof ... list:Wpc decking,fencing,wall panel,DIY decking,enging,accessories and the derivated products:guardrails,flowerboxes,junk boxes,dusbins,benches,chairs for indoor and ... to your customers to step on real wood. 4) musn't add the toxic substance such as CCA,so using safely ...