1. Ahlstrom Oyj
2. Airmatic Filterbau GmbH
3. ALCO Filters Ltd.
4. BorgWarner Inc.
5. Cummins Inc.
6. Denso Corporation
7. Donaldson Company Inc.
8. DRiV Incorporated
9. Elofic Industries Limited
10. EuroGIELLE s.r.l.
11. First Brands Group IP LLC
12. Freudenberg Filtration Technologies SE & Co. KG
13. Hengst SE
14. K&N Engineering Inc.
15. Lydall Inc.
16. MAHLE GmbH
17. MANN+HUMMEL International GmbH & Co. KG
18. MayAir Group
19. Parker Hannifin Corporation
20. Robert Bosch GmbH
21. ROKI Co. Ltd.
22. Sawariya Auto Tech Private Limited
23. Sogefi S.p.A.
24. Toyota Boshoku Corporation
25. Valeo S.A.