1. ABB Ltd
2. ACTOM
3. Avantha Group
4. Chengdu Xuguang Electronics Co. Ltd.
5. Crompton Greaves Consumer Electric Limited
6. Eaton corporation
7. Kirloskar Electric Company
8. Kunshan GuoLi Electronic Technology Co. Ltd.
9. LS ELECTRIC Co. Ltd.
10. Megger Group
11. Meidensha Corporation
12. Mitsubishi Electric Corporation
13. PRESAIR
14. Shaanxi Baoguang Vacuum Electric Device Company Limited
15. Siemens AG
16. Toshiba Corporation
17. Udeyraj Electricals Private Limited
18. Vacuum Interrupters Inc.
19. Wuhan Feite Electric Co.Ltd
20. Wuhan Feite Electric Company Limited
21. Yamuna Power & Infrastructure Ltd.
22. Zhiyue Group CO.LTD