1. ABB Ltd.
2. Adiradh Energy Pvt.Ltd
3. Delta-X Research Inc.
4. Drallim Industries Limited
5. Dynamic Ratings
6. GATRON GmbH
7. General Electric Company
8. Hiden Analytical Ltd.
9. Kinectrics
10. Krilinex Power Solutions S.L. by Doble Engineering Company
11. Maschinenfabrik Reinhausen GmbH
12. Megger Group Limited
13. Mettler-Toledo International Inc.
14. MTE Meter Test Equipment AG
15. Qualitrol Company LLC
16. Schlumberger Limited
17. SDMYERS
LLC
18. Siemens AG
19. Sieyuan Electric Co. Ltd.
20. Thermo Fisher Scientific Inc.
21. Vaisala Oyj
22. Weidmann Electrical Technology AG
23. Wuhan UHV Power Technology Co. Ltd.