List of GAMMA's international collaborations

- Tecnimont, Italy .............................................................................. Leader, Consortium, South Pars Phase 12, Tombak
- GS, South Korea ............................................................................. Erection Works, South Pars Phases 9&10 Assaluyeh
- ENI / Agip, Italy............................................................................... Building & Civil Works, South Pars Phases 4&5 Assaluyeh
- Total/Hyundai, France/South Korea ................................................ Civil and Foundation Work, South Pars Phases 2&3 Assaluyeh
- China Tianchin Engineering ............................................................ MEKPCO Methanol Plant Corporation (TCC)
- Danieli, Italy .................................................................................... Steel Making Facilities, Khorasan Steel Complex
- Danieli, Italy .................................................................................... Rolling Mill, Khorasan Steel Complex
- Saipem/T.P.L., Italy ......................................................................... W.W.W.T. Plant, Arak Refinery, Arak
- Filippo Fochi, Italy .......................................................................... Pipe Ways & Bridges, Arak Petrochemical Complex, Arak
- Davy Power Gas .............................................................................. Shiraz Petrochemical Complex
- Kajima Corporation, Japan .............................................................. Olefins Plant, Bandar Imam Petrochemical, Complex, Bandar Imam
- Hazama Gumi, Japan ....................................................................... Chlorine-Alkali Plant, Bandar Imam Petrochemiacl Complex, Bandar Imam
- Hazama Gumi, Japan ....................................................................... Electrolysis Plant, Bandar ImamPetrochemical Complex, Bandar Imam
- Kajima Corporation, japan ............................................................... C.M.Plant, Bandar Imam Petrochemical complex, Bandar Imam
- Nippon Concrete Industries, Japan ................................................... Concrete Pile Factory, Bandar Imam
- Mitsubishi Heavy Industries, Japan .................................................. Plasticizer Plant, Bandar Imam
- Ingra, Yugoslavia .............................................................................. Lavan Island Refinery, Lavan Island
- Simon Carvs, England ...................................................................... Carbon Black Plant, Ahwaz
- Snam Progetti, Italy .......................................................................... Offsite Works of Fars Refinery, Shiraz
- C.J.B., England ................................................................................. Sugar Factory Ghochestan and Asad-Abad
- Stokvis, Holland ................................................................................ Ore Loading Plant, Tehran
- Westinhouse, U.S.A. .......................................................................... Power plant, tehran
- Philips, Holland ................................................................................. Microwave Station, All over Iran
- Lummus, England ............................................................................. Petrochemical Plant Sewage Disposal, Abadan
- Flour International, U.S.A. ................................................................ Oil Pipeline from Tehran Refinery to Ray Reservoir