1. ABB Ltd.
2. ANDRITZ AG
3. Azbil Corporation
4. Baker Hughes Company
5. Beckhoff Automation GmbH & Co. KG
6. CG Power & Industrial Solutions Ltd. by Murugappa Group
7. Concept Systems Inc.
8. Emerson Electric Co.
9. General Electric Company
10. Hitachi
Ltd.
11. HollySys Automation Technologies Ltd.
12. Honeywell International Inc.
13. Hyosung Heavy Industries
14. IMB Controls Inc.
15. INGETEAM
S.A.
16. Larsen & Toubro Limited
17. Mitsubishi Heavy Industries
Ltd.
18. NovaTech
LLC
19. Omron Corporation
20. Rockwell Automation Inc.
21. SAE International
22. Schneider Electric SE
23. Siemens AG
24. Symbiotic Automation Systems (P) LTD.
25. Toshiba Corporation
26. Valmet Corporation
27. Yokogawa Electric Corporation
28. ZAT a.s.
29. Zhejiang Chitic Control Engineering Co. Ltd. by Zhejiang CHINT Electrics Co. Ltd.