Sucker Rod Pump, Progressing Cavity Pump, Downhole Pump manufacturer / supplier in China, offering API 11ax Double Acting Pump Suitable for High Formation Pressure and Abundant Fluid Availability in Oil Wells, Double Acting Pumps Compliant with API Standards, Designed for High-Pressure Reservoirs and Adequate Fluid Supply Wells, API Standard for Double Acting Pumps in Oil Wells with High Reservoir Pressure and Sufficient Liquid Supply and so on.