- Yancheng Xinyongjia Petroleum Machinery Manufacturing Co., Ltd.
- Downhole Motor, Mud Motor, Pdm Motor, Drilling Mud Motor, Mwd Drill Pipe, Dhm Motor, Diesel Generator, Diesel Engine, Diesel Pump, Tractor Pto
Jiangsu
- Qingdao Hna Oilfield Equipment Manufacturing Co., Ltd.
- Mud Pump Parts
Shandong
- Nantong Percent Precision Manufacturing Co., Ltd
- Petroleum Drilling Tools; Handling and Wellhead Tools
Jiangsu