1. A.T.S. s.r.l.
2. Airfilter Engineering
3. ALMiG Compressors GmbH
4. Altec Air
5. Atlas Copco AB
6. BAUER COMP Holding GmbH
7. Beko Technologies
8. Boge Kompressoren
9. Donaldson Company Inc.
10. FST GmbH Filtrations-Separations-Technik
11. GENERON
12. Ing. Enea Mattei SpA
13. Ingersoll Rand Inc.
14. Kaeser Compressors Inc.
15. Metal Work S.p.A.
16. Omega Air d.o.o.
17. Parker-Hannifin Corporation
18. Pentair plc
19. Precision Filtration Products
20. Prevost SAS
21. SPX Flow Inc.
22. Sullair by Hitachi
Ltd.
23. Sullivan-Palatek Inc.
24. Van Air Systems
25. Walker Filtration