1. Ahlstrom-Munksj?
2. Alfa Laval
3. Camfil AB
4. COMO Filtration Systems
5. Cummins Inc.
6. Danaher Corporation
7. Donaldson Company Inc.
8. DrM
Dr. Mueller AG
9. Eaton Corporation PLC
10. Filtration Group Corporation
11. Fleetlife Inc.
12. Freudenberg Filtration Technologies GmbH & Co. KG
13. Hengst SE
14. HYDAC International GmbH
15. Lenntech B.V
16. MANN+HUMMEL International GmbH & Co. KG
17. Parker-Hannifin Corporation
18. Pearl Filtration Pty Ltd.
19. Pentair PLC
20. ROSEDALE PRODUCTS Inc.
21. Rubix Group International Limited
22. Saifilter Filtration Technologies
23. Sidco Filter Company
24. Suzhou National Purification Technology Co. Ltd.
25. W. L. Gore & Associates Inc.