- Chi Mei Corporation
- Covestro AG
- Formosa Chemicals & Fibre Corp.
- Idemitsu Kosan Co.Ltd.
- LG Chem
- LOTTE Chemical CORPORATION
- Mitsubishi Chemical Corporation (Mitsubishi Engineering-Plastics Corp.)
- SAMYANG CORPORATION
- SABIC
- TEIJIN LIMITED
- Trinseo