We, Changsha PDM Machinery (Group) Co., Ltd , established in 1982 year, 1992 year, 199 year and 2002 year, with own 4 factories, one for oil pump manufacture, one for split case pump manufacture, one for turbine pump, boiler &multistage pumps manufacture, one for other types of pump manufacturer. We own our cast factory.We are the largest pump base in China.