Extrusion Line, Plastic Machinery, Single Screw Extruder manufacturer / supplier in China, offering HDPE Electro Fusion Girth Welding Tap for Hollow Wall Spiral Pipe Joint, PU Polyurethane Foam Machine for Pre-Insulated Pipe 500-1600 High Pressure Air Type, Polyurethane Spray Coating and Spray PE Pre Insulated Pipe Production Line and so on.