Spot Welding Electrode, Screw and Barrel for Extrusion, Spare Parts for Extruder manufacturer / supplier in China, offering Bimetallic Conical Twin Screw and Barrel for PVC WPC Pipe and Sheet, Plastic Extruder Parts High Torque Screw Shaft for Peek PVDF Production, Bimetallic Screw and Barrel Extruder Shaft Extruder Barrel for Peek Production and so on.