1. Andritz Group
2. Babcock & Wilcox Enterprises Inc.
3. Bharat Heavy Electricals Limited
4. Dongfang Electric Corporation
5. Doosan Heavy Industries & Construction
6. General Electric Company
7. Harbin Electric Corporation
8. IHI Corporation
9. JFE Engineering Corporation
10. John Wood Group PLC
11. Mitsubishi Power
Ltd.
12. PJSC Krasny Kotelshchik
13. Rentech Boiler
14. Siemens AG
15. Sofinter Group
16. Sumitomo Heavy Industries
Ltd.
17. Thermax Limited
18. Valmet Oyj
19. Zhengzhou Boiler Co. Ltd.