1. American Jereh International Corporation
2. Beijing Sunrise Technology Co. Ltd.
3. Besdrill Machinery Co.Ltd.
4. BOS Energy International FZE
5. Cixi Fly Pipe Equipment Co.Ltd.
6. Hess Services Inc.
7. Hubei Petrokh Machine Manufacturing Co. Ltd.
8. HYDCO ENGINEERING PVT. LTD.
9. KOLLER Solutions Maschinen- und Anlagenbau GmbH
10. NOV Inc.
11. Shandong KERUI Petroleum Technology Co. Ltd.
12. Shengji Petro
13. Sunnda Corporation
14. Tianjin DFXK Petroleum Machinery Co.Ltd.
15. Tianjin Elegant Technology Co. Ltd.
16. Western Silverline
17. Yantai Jereh Petroleum Equipment & Technologies Co. Ltd.