Jingong Petroleum Machinery Manufacture Ltd. Of Renqiu City, Hebei is the Key cooperative units of China national petroleum equipment general corporation, excellent designer and maufacturer for petuoleum dringling and production equipment. It is founded in 2001. it is a professional manufacture company integrated with research, production, marketing, service etc. The company has got through the certificates of ISO 9001 (the international management standard with its quality management system), ISO 14001 (environment management system), OHSAS 18001 (occupational healthy and safe standard). It owns two new model and practical patents. The main products are adjusting device of belt for beam pumping unit, repair tools for casing, wellhead and chrismas tree, wellhead device for oil(gas) produc
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