1. Adell Group Inc.
2. AKRO-Plastic GmbH
3. Arkema Group
4. Asahi Kasei Corporation
5. BASF SE
6. Celanese Corporation
7. Chevron Phillips Chemical Company
8. DuPont de Nemours Inc
9. Ensinger Inc.
10. LyondellBasell Industries Holdings B.V.
11. Merck KGaA
12. NORDIC GRAFTING COMPANY A/S
13. Polyone Corporation
14. Ravago Group
15. RTP Company Inc.
16. Solvay SA