Extrusion Line, Plastic Machinery, Single Screw Extruder manufacturer / supplier in China, offering Huashida Gas Pipe Production Line High Density Polyethylene Pressure Pipe, NBR/EPDM Foaming Flexible Rubber Insulation Tube Production Machinery for Air Conditioning Applications, Electro Fusion Girth Welding Tape for HDPE Hollow Wall Spiral Pipe Joint and so on.