Wood Plastic Composite Material(also called “WPC”，“man-made Wood”，“Plastic Lumber”).It is with the thermoplastic resin and the natural fiber (for example lime pyrolignite, rice husk, wheat straw, peanut shell, bamboo powder and so on) after the high polymer modification, with matches mixes, squeezes out one kind of compound material which the equipment processing makes. It has both the plastic and the lumber characteristic, may substitute them in many situations, the application domain is extremely widespread; the material to be allowed 100% recycling, is one kind conforms to the international initiative circulation economy environmental protection new material, thus extremely has the development potential.