1. Borealis AG
2. Chevron Phillips Chemical Company LLC
3. Dowpol Chemical International Corp.
4. Evonik Industries AG
5. Exxon Mobil Corporation
6. Idemitsu Kosan Co.Ltd.
7. INEOS AG
8. JAM Petrochemical Co.
9. Lanxess AG
10. LyondellBasell Industries N.V.
11. Mitsubishi Chemical Corporation
12. Mitsui Chemicals Inc.
13. P. S. CHEMICALS
14. PJSC Nizhnekamskneftekhim
15. Qatar Chemical Company Ltd.
16. SABIC
17. Sasol Limited
18. Shell International B.V.
19. Tokyo Chemical Industry Co.
20. TPC Group