1. Advanced Emissions Solutions Inc.
2. Albemarle Corporation
3. Arkema S.A.
4. BASF SE
5. Clariant AG
6. Culligan International Company
7. Cyclopure Inc.
8. Dow Chemical Company
9. DuPont de Nemours Inc.
10. EnviroChemie GmbH
11. Evoqua Water Technologies LLC
12. GEH Wasserchemie GmbH & Co. KG
13. Guangzhou Shincci Energy Equipment Co. Ltd.
14. Honeywell International Inc.
15. KMI Zeolite Inc.
16. Kuraray Co. Ltd.
17. Lenntech B.V.
18. M2 Polymer Technologies Inc.
19. Ogden Water Ltd.
20. Osaka Gas Co. LTD.
21. Puragen Activated Carbons
22. Purolite Corporation
23. Samco Technologies Inc.
24. Silcarbon Aktivkohle GmBH
25. Veolia Water Technologies