1. Akzo Nobel N.V.
2. Albemarle Corporation
3. Baker Hughes Company by General Electric
4. BASF SE
5. ChampionX Corporation
6. Clariant AG
7. Cortec Corporation
8. Lanxess Deutschland GmbH
9. Lenntech B.V.
10. Lonza Group Ltd.
11. Merck KGaA
12. The Lubrizol Corporation
13. Thor Group Limited
14. Troy Corporation by Arxada Corporation
15. Valtris Specialty Chemicals Limited