1. ABB Ltd.
2. Alfanar Group
3. Bharat Heavy Electricals Limited
4. Brilltech Engineers Pvt. Ltd.
5. CG Power & Industrial Solutions Ltd.
6. Eaton Corporation PLC
7. EBG SRL
8. Elettromeccanica India Pvt. Ltd.
9. ELSCO
10. F.D.U.E.G. Srl
11. Fuji Electric Co. Ltd.
12. GBE S.p.A
13. General Electric Company
14. Hammond Power Solutions Inc.
15. HD Hyundai Electric Co. Ltd.
16. Hitachi
Ltd.
17. Hubbell Incorporated
18. IMEFY S.p.A
19. Jefferson Electric Inc
20. Kirloskar Electric Company Ltd.
21. Krempel GmbH
22. Maddox Industrial Transformer LLC
23. MGM Transformer Company
24. Micron Industries Corp.
25. Olsun Electrics Corporation
26. Professional TAILI Electric Co.Ltd.
27. R&S International Holding AG
28. Raychem RPG Private Limited
29. Schneider Electric SE
30. SGB-SMIT GmbH
31. Siemens AG
32. Spang & Co.
33. Sunbelt Solomon
34. TBEA Co. Ltd.
35. TMC Transformers S.p.A.
36. Toshiba Corporation
37. TRAFO ELETTRO S.R.L.
38. Trafo Power Solutions Pty Ltd
39. Transfos MARY
40. Virginia Transformer Corp.
41. Voltamp Transformers Ltd.
42. WEG S.A.
43. Wilson Power And Distribution Technologies Pvt. Ltd.
44. YueBian Electric Co.Ltd.