Qingdao Gang Zheng Plastic Machinery Co., Ltd. (original Qingdao Zhengkang Plastic Machinery Co., Ltd. is ) is a specialized company producing plastic machinery, and heavy quality and trustworthy provincial advanced enterprises. Our company for the old state-owned enterprises was established in 1993, with twenty years experience in production and sales. There are many stable customers. "Gangzheng" brand in plastic machinery, has been wll known all over the country and we have exported to 15 countries and regions. Our company’s leading product line are as follows: aluminum-plastic composite pipe production, PPR pipe production line, conical twin screw extruder, single screw extruder, large diameter plastic pipe production line, Plastic foam pipe/board/sheet/plate 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. Dear sir I am Sarah, the sales manager of the plastic machinery company, our company is professional in plastic pipe extruder, all kinds of plastic foam board production line, granulation and pelletizing extruder, plastic crusher, grinders, mixer, plastic film/sheet/plate/board machine and so on, especially large diameter pipe( for fuel gas, water service) production line, waste plastic recycling production line, plastic cleaning production line. I will be appreciated if you can contact us when you want to purchase new machines.I am glad to service for you any time. good luck! Dear sir the end, welcome to Qingdao of china and our company.