1. Albemarle Corporation
2. Ashland Inc.
3. Baker Hughes Incorporated.
4. BASF SE
5. Calfrac Well Services Ltd.
6. Chevron Phillips Chemical Company
LLC
7. Clariant AG
8. Dow Chemical Company
9. DuPont de Nemours Inc.
10. FTS International Inc.
11. Halliburton Company
12. Pioneer Engineering Services
13. Schlumberger Ltd
14. SNP
Inc
15. Weatherford International