PVC profile production line 1. for making PVC profile 2. twin screw extruder 3. PLC control system 4. high effeciency PVC profile production line , PVC profile extruding line, pvc profile extrusion line, plastic profile extrusion line . pvc profile production line including the following parts:1. mixing machine2. twin screw extruder3. forming machine4. haul off machine5. cutting machine6. pile