Qingdao Gang Zheng Plastic Machinery Co., Ltd. (original Qingdao Zhengkang Plastic Machinery Co., Ltd. is ) is a specialized company producing plastic machinery, heavy quality and trustworthy provincial advanced enterprises. Company for the old state-owned enterprises, 93-year plant, with ten years experience in production and sales, there are many stable customers. "Gang is" brand plastic machinery, has been all over the country and exported to 15 countries and regions. Company’s leading product line of aluminum-plastic composite pipe production, PPR pipe production line, conical twin screw extruder, single screw extruder, large diameter plastic pipe production line, Plastic Pipe Production Line, plastics (masterbatch) pelletizing production line, plastic profiled material extrusion production lines, blow molding machine, plastic packing tape extrusion unit, micro-drip irrigation production line, large plastic crusher. Company’s new flagship product: SJBG series of heat pipe extruder. This new pipe production line is invented through the digestion and absorption of international technology research and development on the basis of the international level. we can produce a vacuum insulation pipe diameter ranged from Ф110 to Ф1250mm.