1. AC Power Corp.
2. Acopian Technical Company
3. Ainuo Instrument Co. Ltd.
4. Ametek Inc.
5. Aplab Limited
6. B&K Precision Corporation
7. Bicker Elektronik GmbH
8. Chroma ATE Inc.
9. Diametral a.s.
10. Dongguan Sophpower Electronics Co. Ltd
11. ET System electronic GmbH
12. Good Will Instrument Co. Ltd.
13. Ikonix Group Inc.
14. ITECH Electronics Co. Ltd.
15. Keysight Technologies Inc.
16. Kikusui Electronics Corporation
17. Matsusada Precision Inc.
18. Meech Static Eliminators Ltd
19. Newtons4th Ltd.
20. NF Holdings Corporation
21. Orbit International Corporation
22. Pacific Power Source Inc.
23. Quail Electronics Inc.
24. Regatron AG
25. Triad Magnetics