1. ABB Ltd.
2. Alfa Laval AB
3. Alstom
4. Autoflame Engineering Ltd.
5. Babcock & Wilcox Enterprises Inc.
6. Bloom Engineering Company Inc.
7. Catalytic Products International
8. Cleaver-Brooks Company Inc.
9. Doosan Corporation
10. Emerson Electric Co.
11. Faber Burner Company
12. Fireye Inc. by Carrier Global Corporation
13. General Electric Company
14. Hitachi Ltd.
15. Honeywell International Inc.
16. Johnson Controls International PLC
17. Mitsubishi Heavy Industries
Ltd.
18. Nu-way Ltd. by Enertech Group
19. Schneider Electric SE
20. Siemens AG
21. Toshiba Corporation
22. UL Solutions
23. Woodward Inc.
24. Yokogawa Electric Corporation
25. Zeeco Inc.