One-step way that is eliminating the middle granulation of this link. put the raw materials directly in a group of equipment, with mixing and extruding products completed in one time. The advantage in this way is of high efficiency, mixing plastics, and significant energy saving, lower production costs. At present, the usage in PVC class of the extrusion Plastic-wood productsgets more, but it requires more on raw materials, feeding devices, supporting the mould and extrusion equipment. And also to the staff's overall technological level.