1. Asahi Kasei Chemicals Corporation
2. BASF SE
3. Bayer AG
4. Chase Corp
5. Heyo Enterprise Co. Ltd.
6. Kolon Industry Inc.
7. LyondellBasell Industries Holdings BV
8. Mitsubishi Chemical Corporation
9. Momentive Inc.
10. Polyplastics Co. Ltd.
11. Sanyo Chemical Industries Ltd.
12. Saudi Basic Industries Corporation
13. Solvay S.A.
14. Sumitomo Chemical Co. Ltd
15. Supercolori S.p.A.