1. AMETEK Inc.
2. B&K Precision Corporation
3. CHANGZHOU BEICH Electronic Technology Co. Ltd.
4. Chroma ATE Inc.
5. Good Will Instrument Co. Ltd
6. ITECH Electronics Co. Ltd.
7. Keysight Technologies Inc.
8. Kikusui Electronics Corporation
9. Magna-Power Electronics
10. Matsusada Precision Inc.
11. National Instruments Corporation
12. Rigol Technologies
13. Spellman High Voltage Electronics Corporation
14. Tektronix Inc.
15. Teledyne Technologies Incorporated