1. 3M Company
2. ACDelco Inc.
3. Ahlstrom-Munksj? Oyj
4. Air Filter Industries Pvt. Ltd.
5. Air Filters Inc.
6. AL Group LTD
7. Alen Corporation
8. Blueair Inc. by Unilever PLC
9. Camfil Group
10. Coway Co. Ltd.
11. Cummins Inc.
12. Daikin Industries
Ltd.
13. Denso Corporation
14. Donaldson Company Inc.
15. Duraflow Industries Inc.
16. Dyson Technology Ltd.
17. ElectroMaze Air Filters
18. Elofic Industries Ltd.
19. Filtration Group Corporation
20. First Brands Group
LLC
21. Freudenberg Filtration Technologies GmbH & Co. KG
22. Graver Technologies
23. Hengst SE
24. Hollingsworth & Vose Co. Inc.
25. Honeywell International Inc.
26. K&N Engineering Inc.
27. Lydall Inc.
28. M-Filter Group
29. MANN+HUMMEL International GmbH & Co. KG
30. Molekule Inc.
31. Norton Abrasives by Saint-Gobain Group
32. Parker Hannifin Corporation
33. Pliotron Company of America
LLC
34. Rensa Filtration
35. Robert Bosch GmbH
36. United Filter Industries Pvt. Ltd.
37. Whirlpool Corporation