- Alpek SAB de CV
- China Resources Chemical Materials Technology Co. Ltd
- Far Eastern New Century Corporation
- Hengli Group Co. Ltd
- Hengyi Petrochemical Co. Ltd
- Indorama Ventures Public Company Limited
- JBF Industries Ltd
- Jiangsu Sanfangxiang Group
- Lotte Chemical Corporation
- OCTAL
- Reliance Industries Ltd
- Saudi Basic Industries Corporation (SABIC)
- Sinopec Group
- Zhejiang Zhink Group Co. Ltd