Tiehu Petroleum Machinery Co., Ltd. is an integrated petroleum machinery manufacturing enterprise specializing in the production of oil drilling equipments and has been one of plants for supporting well control equipments organized by China National Petroleum Corporation. Established in 2000, with many year? hard working and perseverance, it had developed into a professional manufacturer integrating scientific research, productions and sales. Its factory covers an area of 21,000 square meters, of which 9200 square meters are used for production workshops. The company has owned strong R & D capability in science and technology, comprehensive production equipments such as machining, heat treatment, rubber seals and inspection equipments with complete test facilities.