... collectors, vent pipes, car lines, cable sleeve pipes and ornamental light fixture corrugated pipes. 2.5 The materials can be PE, PVC ... Shanghai Xinxing Twin Screw Machinery Co., Ltd. (hereinafter referred to as “Xinxing”) specializes in manufacturing plastic extrusion machinery and ... , PVC-U core foaming pipe units, high-speed PVC hard pipe units, profiled bar units, PVC granulator units, SJW ...