Puyang Donghao Mechanical&Electronic Co.,Ltd.which is located in the Industry Cluster District in the beautiful hometown of dragon,Website:http://www.dhpetrotools.com, Puyang in China, was established in January 2000.It is a network member unit of the Materials and Equipment Corporation in the Sinopec Group. Meanwhile, it is an important private enterprises in Puyang and the provincial-level enterprise technology center.The company is a technology-based manufacturing enterprise ,mainly focusing on the R & D and production of downhole tools and water treatment equipment. The registered capital is 22 million RMB.