1. ABB Ltd.
2. Adept Fluidyne Pvt. Ltd.
3. Aichi Tokei Denki Co. Ltd.
4. Arrowmech
5. Azbil Corporation
6. Badger Meter Inc.
7. Emerson Electric Company
8. Endress+Hauser AG
9. Fluido Sense Pvt Ltd.
10. General Electric Company
11. Honeywell International Inc.
12. IDEX Corporation
13. ISOIL Industria Spa
14. KROHNE Messtechnik GmbH
15. Manas Microsystem Pvt. Ltd.
16. McCrometer Inc.
17. Omega Engineering Inc.
18. ONICON Incorporated
19. Siemens AG
20. Tianjin Sure Instrument Co. Ltd.
21. Tokyo Keiso Co. Ltd.
22. Toshiba Corporation
23. VTM-UTAM
24. Yantai Auto Instrument Making Co. Ltd.
25. Yokogawa Electric Corporation