Foreign Consulting Engineers

• Binnie & Partners (GB)
• General surveyance Co. ( Switzerland )
• Howard Humphry Co.(GB)
• Inspectorate Co. (GB)
• Metcalf and Eddy Co.( USA )
• Sanyu Consultants Inc., ( Japan )
• Sir Alexander Gibbs (GB) & Dr. Kouros

Iranian Consulting Engineers

• Avang Saze Co.
• Azmouneh Foulad Co.
• Darya Khak-o-Pey Co.
• Geophysic Institute Of Tehran University
• Gisement Consulting Engineers
• Iran Naghshe Co.
• Iranab Co.
• Kouban Kav Co.
• Kankavan Co.
• Khazarab Co.
• Mandro Co.
• Pars Consult Co.
• Zavieh Yab Co.

Foreign Contractor Companies

• A.B.B Co. (Switzerland)
• Alstom Co. (France)
• Brown Bowery Co. (Switzerland)
• B.B.C Co. (Austria)
• C.B.C Co. (France)
• C.E.M. Co.
• Cuproco Co. (Canada)
• Degremon Co. (France)
• Denso Co. (England)
• Erhard Co. (Germany)
• Group Co. (Germany)
• Housh Co. (Japan)
• K.S.B Co. (Germany)
• Mata Petro Co. (Netherland)
• Owns Corning Co. (USA)
• Passavant Co. (Germany)
• Ponta-Moosan (France)
• Redland Co. (England)
• Siemens Co. (Germany)
• Sato ko gio Co.(Japan)
• Victolic Co. (Britain)
• Reymond (Britain)
• Z.D.F. (Germany)
• MWM (Germany)
• Japan Steel Co. (Mitsubishi)

General Iranian Contractor Companies

• Abgozar Co.
• Assa Owler Co.
• Batiman Co.
• Beton pash Co.
• Bonyad Mostazafan
• Bornak Co.
• CBC & Sabir Joint
• Civil Dez Co.
• Chelin Co.
• Construcsion Co.
• DAS Co.
• EV- Yol Const. Co.
• Eghlim Co.
• Falegh Sanaat Co.
• Fara Beton Co.
• Faridan Co.
• Firouza Co.
• Farasan Co.
• Gharargahe Khatamolanbia
• Hesar Pooshesh Co.
• Iran Madar Co.
• Iran Spiral Factory
• Interlock Co.
• Iran Industrial Valve Co.
• Iran Transfo Co.
• Iran Arvin Co.
• Iran Industrial Design Co.
• Iran Water Equipment Co.
• Jahad Infrastructural Development Services Co.
• Jyane Co.
• Jahad Research Institute
• Jahanpars Co.
• Kotam Gostar Co.
• Makadam Co.
• Maroo Sanaat Co.
• Mehrabad Industrial Co.
• Mirab Co.
• Machine Sazy Arak Co.
• Machine Sazy Pars Co.
• Mobarakeh Steel Complex
• National Drilling Co.
• Omrab Co.
• Payanic Fars Co.
• Elmek Co.
• Khouzestan Pipe Manufacturing Plant
• Pars Maroon Co.
• Pump Iran Co.
• Solpres Co.
• Sadid Jahan Sanat Co.
• Shangarf Co.
• Tabdil Energy Payab Co.
• Tehran jonoob Co.
• Toos Abgin Co.
• Vesal Control Co.