1. ABB Inc.
2. Acopian Technical Company
3. Advanced Energy Industries Inc.
4. AEC Magnetics
5. AEG Power Solutions B.V.
6. Alpha Group
7. Ampcontrol Limited
8. B&K Precision Corporation
9. Chroma Group
10. Datel Inc.
11. Delta Electronics Inc.
12. Eaton Corporation PLC
13. Enersys Inc.
14. General Electric Company
15. Good Will Instrument Co. Ltd.
16. Heinzinger Electronic GmbH
17. Huawei Technologies Co. Ltd.
18. Keysight Technologies Inc.
19. Mitsubishi Heavy Industries
Ltd.
20. Rohde & Schwarz GmbH & Co KG
21. TDK Corporation
22. Tektronix Inc.
23. Vertiv Group Corp.
24. Xantrex Technology Inc.