... mixing extruding production line adopts special-designed screw stem, material cylinder, moulds etc. PE,PVC SPECIAL-SHAPED MATERIAL EXTRUSION PRODUCTION ... extruder. The wood-plastic mixing extruding production line adopts special-designed screw stem, material cylinder, moulds and processing technology. ... ancillary to produce PE, PP or PVC wood-plastic special-shaped products. It is a kind of new ...