1. ABB Ltd.
2. Ametek Inc.
3. Azbil Corporation
4. Christian B?rkert GmbH & Co. KG
5. Delta Electronics Inc.
6. DUON System Co. Ltd.
7. Emerson Electric Co.
8. Endress+Hauser AG
9. Foxboro Instrument Company
10. Fuji Electric Co. Ltd.
11. General Electric Company
12. Hach Company
13. HIMA Paul Hildebrandt GmbH
14. Hitachi
Ltd.
15. Honeywell International Inc.
16. Krohne Ltd.
17. Omron Corporation
18. Shimadzu Corporation
19. Siemens AG
20. WIKA Group
21. Xylem Inc.
22. Yokogawa Electric Corporation