1. 3M Company
2. Alpha Pro Tech Ltd.
3. Alpha Solway Ltd.
4. Avon Protection Systems Inc.
5. Delta Plus Group S.A.
6. Dr?gerwerk AG & Co. KGaA
7. Gentex Corporation
8. Honeywell International Inc.
9. ILC Dover
LP
10. Moldex-Metric Inc.
11. MSA Safety Incorporated
12. Ocenco Inc.
13. Pan Taiwan Enterprise Co. Ltd.
14. Thermo Fisher Scientific Inc.
15. W.W. Grainger Inc.