Polyplastics Co., Ltd. 3. Ravago Americas 4. Asahi Kasei Corporation 5. BASF SE 6. Celanese Corporation 7. Covestro AG 8. RTP Company 9. AKRO-PLASTIC GmbH 10. Daicel Polymer Ltd. 11. Eurostar Engineering Plastics 12. Formulated Polymers Limited 13. Ginar Technology Co. Ltd. 14. HDC HYUNDAI EP COMPANY 15. KAWASAKI SANKO KASEI Co., Ltd. 16. Ngai Hing Hong Company Limited 17. Piper Plastics, Inc. 18. Teknor Apex 19. Trinseo LLC 20. WITTENBURG GROUP. 21. Solvay SA 22. DowDuPont 23. SABIC 24. LG Chem 25.