est end of Hengfeng Road, Zoucheng, Shandong, China. Jining, Shandong
Zoucheng Dongyuan Petroleum Machinery Co., Ltd. is a high-tech. company specializing in Positive Displacement Motor, as well relevant fittings, for onshore oil drilling. It has been taking the role one of most reliable tier suppliers SNOPEC and CNPC.It?s ...
downhole motor, down hole motor, mud motor, by-pass valve, power section, motor, universal shaft, cardan shaft, drive shaft
