The WPC extrusion moulding machine adopts the specially designed SJSZ80 conical twin-screw extruder, using SCR dc or frequency converter speed control, choose imported or joint venture temperature control instrument, has a wide scope of speed control, temperature control of high precision, convenient operation and reliable. The auxiliary machine consists of a vacuum set, a drawing class, a cutting machine and a feed rack. WPC extrusion moulding machine is equipped with large force and calm momentum to ensure the shaping effect of door panel. The crawler is used to speed the motor and inverter. It has the characteristics of reasonable structure, large attraction and stable traction. The cutting machine of WPC extrusion moulding machine has the advantages of reliable and accurate work, high cutting precision, and the push frame is equipped with movable pushing trolley and special rubber protection layer, which has the features of non-breaking material and easy to use.The auxiliary machine of WPC extrusion moulding machine adopts programmable computer control or domestic famous brand control system, complete machine control is reliable and stable.