1. ABB Ltd.
2. Bifold Group Ltd.
3. BWB Controls
4. Doedijns Group
5. Emerson Electric Co.
6. Esoteric Automation & Control Technologies
7. General Electric Company
8. Halliburton Company
9. HIMA Paul Hildebrandt GmbH
10. Honeywell International Inc.
11. Metso Corporation
12. NOV Inc.
13. Omron Corporation
14. Proserv UK Ltd.
15. Rockwell Automation Inc.
16. Ruelco Inc.
17. Safoco Inc.
18. Schneider Electric SE
19. Sella Controls Limited
20. Siemens AG
21. Versa Products Company Inc.
22. Winn-Marion Companies
23. Worldwide Oilfield Machine Inc.
24. W?rtsil? Corporation
25. Yokogawa Electric Corporation