?- Braskem
- Chevron Phillips Chemical Company LLC
- Cymetech (Sojitz Corporation)
- Dow
- ENEOS Corporation
- Kolon Industries Inc.
- LyondellBasell Industries Holdings BV
- Merck KGaA
- NOVA Chemicals
- PJSC Nizhnekamskneftekhim
- Ravago Chemicals
- Royal Dutch Shell
- Shandong Qilong Chemical Co. Ltd
- Sinopec Shanghai Petrochemical Co. Ltd
- YEOCHUN NCC CO. LTD
- ZEON Corporation