?- Alfa S.A.B. de C.V.
- Celanese Corporation
- Ghaed Basir Petrochemical Products Company (GBPC)
- IVL Dhunseri Petrochem Industries Private Limited (IDPIPL)
- JBF Industries Ltd
- PCC
- Rabigh Refining and Petrochemical Company (Petro Rabigh)
- SABIC
- Saudi Methacrylates Company (SAMAC)
- Shahid Tondgooyan Petrochemical Company
- Sipchem Company
- Tabriz Petrochemical Company.