Jinan Tianwei Innovation Oilfield Equipment Enterprise (OEE) is a leading manufacture of mud pump and its fluid and expendables products in China. OEE's products have equivalent quality with those of OEM and are interchangeble for brand mud pump such as Emsco, Gardner-Denver, National, Oilwell, Ideco, Skytop/Brewster, OPI, Wirth,Wilson, Gaso. The products quality is in accordance with the stipulation of API (American Petroleum Institute).OEE's high quality products perform excellent under high pressure, high temperature, and corrosion.