1. ABB Ltd.
2. Allis Electric Co. Ltd.
3. Arteche Group
4. Bokon Electric Co. Ltd.
5. Chint Group
6. Eaton Corporation PLC
7. Fuji Electric Co. Ltd.
8. General Electric Company
9. Hitachi Ltd.
10. Hyosung Heavy Industries
11. JST Power Equipment Inc.
12. Kanohar Electricals Ltd.
13. KharkovEnergoPribor Ltd.
14. Meidensha Corporation
15. Mitsubishi Electric Corporation
16. Nissin Electric Co. Ltd.
17. Pfiffner Group
18. Sandian Electric
19. Schneider Electric
20. Siemens AG
21. Switchgear Company
22. Takaoka Toko Co. Ltd.
23. Tatung(Shanghai) Co. Ltd.
24. Toshiba Corporation
25. Yangzhou Power Electric Co. Ltd.