1. Analog Devices ,Inc.
2. Anritsu Corporation
3. Aplab Ltd.
4. Astronics Corporation
5. EXFO Inc.
6. Fortive Corporation
7. GL Communications Inc.
8. Huawei Technologies Co. Ltd.
9. Keysight Technologies Inc.
10. National Instruments Corp.
11. Rohde & Schwarz GmbH & Co. KG
12. Spirent Communications PLC
13. Tektronix Inc.
14. Texas Instruments Incorporated
15. Viavi Solutions Inc.