1. Amprobe by Fluke Corporation
2. Anritsu Corporation
3. B&K Precision Corporation
4. Changzhou Applent Instruments Ltd.
5. Chroma ATE Inc.
6. Good Will Instrument Co. Ltd.
7. Hazari Tech Connect Pvt. Ltd
8. Hioki E.E. Corporation
9. Iwatsu Test Instruments Corp.
10. Keysight Technologies
11. Kikusui Electronics Corp.
12. Meco Instruments Pvt. Ltd.
13. Megger Group Limited
14. National Instruments by Emerson Electric
15. NF Corporation
16. Quad Group Inc.
17. Reed Instruments
18. Rohde & Schwarz
19. Scientific Mes-Technik Pvt. Ltd.
20. Sigma Instruments
21. Simpson Electric Company
22. Tektronix Inc.
23. Teledyne FLIR LLC
24. VAR Tech
25. Wacoinstruments