Rod pump, sucker rod pump, deep well oil pump, subsurface rod pump, subsurface pump ... service is excellent. We manufacture and supply the deep oil well sucker rod pumps to API 11AX specification ... manufacture special pumps, such as hi-viscosity crude oil pumps, gas-proof pumps and sand-proof pumps, ... pumps, hydraulic feed back pumps for heavy crude oil, pumps with forced mechanic valves, gas-proof pumps ...