Wood-Plastic Composite (WPC) materials is a kind of new material mixed by polyester and wooden fiber materials, and with a few chemical additive. It has both the advantages of wood and plastic. Generally speaking, the hardness of WPC is about 2~8 times more than unprocessed wood and 4~5 times more than wood in wearlessness. Moreover, the usage of the additves gives it more characteristics. Besides, WPC is a kind of Environmentally Friendly material. It is a kind of recycled material that can be recover and put back to use. WPC materials is a perfection to replace wood\ plastic and now WPC decking for outdoor living is quite popular in Europe and North America.