1. 3M Company
2. ACOEM Group
3. Amphenol Corporation
4. Castle Group Ltd.
5. Cesva Instruments S.L.U.
6. Cirrus Research PLC
7. Exair Corporation
8. Honeywell International Inc.
9. Hottinger Br?el & Kj?r A/S
10. HT Italia S.r.l.
11. MTS Systems Corporation
12. NTi Audio AG
13. PCE Deutschland GmbH
14. Pulsar Instruments
15. RION Co. Ltd.