1. AEMC Instruments by Chauvin Arnoux Group
2. B&K Precision Corporation
3. Fluke Corporation
4. Good Will Instrument Co. Ltd.
5. Keysight Technologies Inc.
6. Kikusui Electronics Co. Ltd.
7. National Instruments Corporation
8. PROMAX Test & Measurement SLU
9. RIGOL TECHNOLOGIES CO. LTD.
10. Scientech Technologies Pvt. Ltd.
11. Shijiazhuang Suin Instruments Co. Ltd.
12. Tabor Electronics Ltd.
13. Tektronix Inc.
14. Teledyne Technologies Incorporated
15. Teradyne Inc.