National Iranian Oil Company
National Gas Company
Engineering and construction of oil industries
National Petrochemical Company
National Oil Construction Engineering
Design and engineering of energy industries
National Copper Industries Company
Mapna group
Sazeh Consulting Engineers Co
Naft Design and Construction Company
Berso Consulting Engineers Co
Technological engineering of mines and metals
Toos Asphalt Company
Rumpco Group
Mobarake Steel Company
Gol Gohar Mining and Industrial Company
Petro Paish Kangan Company
Petropars Company
Farab Co
گروه پارسیان