1. Baker Hughes Company
2. BASF SE
3. BP PLC
4. ChampionX Corporation
5. Core Laboratories N.V.
6. Halliburton Energy Services Inc.
7. Huntsman International LLC
8. Kappa Oil Services
9. Linde PLC
10. Lubrizol Corporation
11. L’Air Liquide S.A.
12. Oil Chem Technologies
LLC
13. Sasol Limited
14. Schlumberger Limited
15. SECURE Energy Services Inc.
16. Solvay S.A.