1. BASF SE
2. Blue Sky Diesel Exhaust Fluid
3. China Petroleum and Chemical Corporation
4. Cummins Inc.
5. Exxon Mobil Corporation
6. GreenChem Petroleum
Inc
7. KLS Automobile Jiangsu Environmental Protection Technology Co. Ltd.
8. Mansfield Energy Corp.
9. McPherson Company
10. NOVAX Material & Technology Inc.
11. Pensol Industries Limited
12. Power Blue International
13. Shell PLC
14. TotalEnergies SE
15. Yara International ASA