1. Siemens Energy AG

2. General Electric Company

3. Schlumberger Limited

4. Endress+Hauser Group Services AG

5. Emerson Electric Co

6. NOV Inc

7. Zeataline Company

8. T.D. Williamson
Inc

9. Fugro N.V

10. NDT Global Corporate Ltd.

11. ROSEN Swiss AG

12. Seatrium Limited