Wood Plastic composite materials (Wood Plastic Composites, WPC) at home and abroad is booming in recent years a new type of composite material, the use of polyethylene, polypropylene and PVC, etc., instead of the usual resin adhesive, with over 50% of Wood powder, rice husk, straw waste plant fiber blend into a new wooden material, then through extrusion, molding, injection molding and other Plastic processing technology, to produce the sheet or shaped. Mainly used in building materials, furniture, logistics packaging, etc. Plastic and wood powder mixed in certain proportion after hot extrusion forming sheet, called extrusion wood plastic composite plate.