National Iranian Oil Company
National Iranian Gas Company
National Petrochemical Company
South Pars Gas Complex
Ilam Gas Refining Company
Shazand Oil Refining Company
Jahan Pars Engineering and Construction Company
Gachsaran Oil and Gas Exploitation Company
Amirkabir Petrochemical Company
Shahid Hashminejad Gas Refining Company
Parsian Gas Refining Company
Pars Petrochemical Company
Tondgoian Petrochemical Company
Lordegan Petrochemical Complex Company
Nouri Petrochemical Company
Mapsa Control Co
Fars Innovative Amn Pazhoh Company
Absan Zolal Middle East Company
Regal Petrochemical
Razi Petrochemical Company
Arak Machinery Engineering and Construction Company
