1. 3M Company
2. ACWA Services Limited
3. Advantec MFS Inc.
4. Alfa Laval AB
5. Amazon Filters Ltd.
6. Aquabio Ltd.
7. Aquatech International LLC
8. Asahi Kasei Corporation
9. Berghof Membrane Technology GmbH
10. Compagnie de Saint-Gobain S.A.
11. Danher Corporation
12. DuPont de Nemours Inc.
13. Fileder Filter Systems Ltd.
14. Filtration Group Corporation
15. FILTROX AG
16. GEA Group AG
17. Jiangsu Jiuwu Hi-Tech Co. Ltd.
18. Koch Membrane Systems Inc.
19. MANN+HUMMEL Water & Fluid Solutions GmbH
20. Merck KGaA
21. Pentair PLC
22. Porvair Filtration Group
23. ProMinent GmbH
24. Sartorius AG
25. Synder Filtration Inc.
26. Toray Industries Inc.
27. Veolia Water Solutions & Technologies
28. WABAG Group