1. ABB Ltd.
2. British Engines Limited
3. DAFRAM S.p.A.
4. Emerson Electric Co.
5. General Electric Company
6. HIMA Paul Hildebrandt GmbH
7. Honeywell International Inc.
8. Larsen & Toubro Ltd.
9. Mogas Industries Inc.
10. Paladon Systems Ltd.
11. Rockwell Automation Inc.
12. Schlumberger Limited
13. Schneider Electric SE
14. Siemens AG
15. Yokogawa Electric Corporation