1. Anten Chemical Co. Ltd.
2. Arkema S.A.
3. Bear River Zeolite
4. Clariant AG
5. Gordes Zeolite
6. Grace by Standard Industries Holdings
7. Hengye Group
8. Honeywell International Inc
9. Micromeritics Instrument Corporation
10. Northern Filter Media Inc.
11. Rota Mining Co.
12. St. Cloud Mining Inc.
13. Tosoh Corporation
14. Zeo Inc.
15. Zeochem AG
16. Zeolyst International Inc.