1. Axeon Water Technologies
2. ChemTreat Inc.
3. DuPont de Nemours Inc.
4. General Electric Company
5. Hongtek Filtration Co. Ltd.
6. Hunan Keensen Technology Co.Ltd.
7. JSC RM Nanotech
8. Koch Separation Systems Inc.
9. LANXESS
10. LG Chem
Ltd.
11. MANN+HUMMEL Water & Fluid Solutions GmbH
12. Membracon Ltd.
13. Met-Chem Inc.
14. NITTO DENKO CORPORATION
15. Nitto Denko Group Company
16. Permionics Membranes Private Limited
17. Samco Technologies Inc.
18. SOLVAY S.A.
19. Synder Filtration
Inc
20. Toray Industries Inc.
21. Toyobo Engineering Co. Ltd.
22. Vontron Technology Co Ltd.
23. ???Freudenberg SE