1. APC Filtration Inc.
2. Becker Aviation
3. British Filters Limited
4. Champion Aerospace Inc.
5. Chase Filters and Components Inc.
6. Collins Aerospace
7. Donaldson Company Inc.
8. FAA FILTERS LLC
9. Falls Filtration Technologies Inc.
10. Filtermist International Limited
11. Filtration Corporation of America
12. Filtration Group Corporation
13. Fluid Conditioning Products Inc.
14. Freudenberg Filtration Technologies GmbH & Co. KG
15. INC Engineering Co.Ltd.
16. MANN+HUMMEL International GmbH & Co. KG
17. MICROWAVE PRODUCTS GROUP
18. Mott Corporation
19. Pall Corporation
20. Parker-Hannifin Corporation
21. Porvair plc
22. Precision Filtration Products
23. PTI Technologies Inc.
24. Recco Products
25. Safran Group
26. Systech Displays Inc.
27. Tempest Aero Group