1. ABB Ltd.
2. ACOEM Group
3. AMETEK Inc.
4. Anodyne Water Engineering Company Pvt. Ltd.
5. Applied Techno Engineers Private Limited
6. Baker Hughes Company
7. Chemtrols Industries Ltd.
8. CODEL International Ltd.
9. Cummins Inc.
10. Custom Instrumentation Services Corporation
11. DURAG Holding AG
12. Eaton Corporation PLC
13. Emerson Electric Co.
14. ENVEA Group
15. ESC Spectrum
16. Exploration Robotics Technologies Inc.
17. Forbes Marshall Pvt. Ltd.
18. Fuji Electric Co. Ltd.
19. Gasmet Technologies Oy
20. General Electric Company
21. Honeywell International Inc.
22. Horiba
Ltd.
23. Intertek Group PLC
24. KCH Services Incorporated
25. Mechanical Systems Inc.
26. Mitsubishi Heavy Industries
Ltd.
27. Oizom Instruments Pvt. Ltd.
28. Parker-Hannifin Corporation
29. Protea Ltd.
30. Rockwell Automation Inc.
31. SGS SA
32. Sick AG
33. Siemens AG
34. Teledyne Technologies Inc.
35. Thermo Fisher Scientific Inc.