1. Ahlstrom
2. Alco Filters Ltd.
3. Ashley Filters
4. CabinAir Sweden AB
5. Cummins Inc.
6. Denso Corporation
7. Donaldson Company Inc.
8. Freudenberg Filtration Technologies GmbH & Co. KG
9. General Motors Company
10. Hanon Systems
11. Hengst SE
12. Hollingsworth & Vose Company
13. K&N Engineering Inc.
14. Lydall Inc.
15. Mahle GmbH
16. MANN+HUMMEL International GmbH & Co. KG
17. Nirvana India Pvt Ltd
18. Parker Hannifin Corporation
19. Robert Bosch GmbH
20. ROKI Co. Ltd.
21. Sogefi S.p.A.
22. Spectrum Filtration Pvt. Ltd.
23. Toyota Boshoku Corporation
24. UFI FILTERS S.p.A.
25. Valeo S.A.