- BASF SE
- Cepsa
- Chemex Organchem Pvt Ltd
- Chevron Phillips Chemical Company
- Citgo
- DuPont de Nemours Inc.
- ExxonMobil Corporation
- Idemitsu Kosan Co. Ltd
- Liaoning Yufeng Chemical Co. Ltd
- PTT Global Chemical Public Company Limited
- Ree Arthva Lifescience Pvt Ltd
- Reliance Industries Limited
- Shchekinoazot