1. Arham Petrochem Private Limited
2. Calumet Specialty Products Partners
L.P.
3. CITGO Petroleum Corporation
4. Exxon Mobil Corporation
5. Gadiv Petrochemical Industries Ltd.
6. Ganga Rasayanie P. Ltd.
7. Gotham Industries
8. Gulf Chemical & industral Oils
9. HCS Group GmbH
10. Heritage-Crystal Clean
Inc
11. Honeywell International Inc
12. Merck KGaA
13. Phillips 66 Company
14. Pon Pure Chemicals Group
15. RB Products Inc.
16. Recochem Inc.
17. Shell PLC
18. SK geo centric Co. Ltd. by SK Innovation Co. Ltd.
19. Sunnyside Corporation