- Farab - - Turnkey contractor of hydroelectric power plants and equipments.
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- Ghods Niroo Consulting Engineers - - Iranian engineering consultants in the areas of power generation, substations, high voltage transmission lines, dams and other water projects.
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- Iritec Engineering Company - - Engineering group active in design and construction of plants for iron mining and steel production.
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- Matn - - Electric power research center. Tehran.
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- Sabcool - - Manufacturer of refrigeration systems.
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- Sobhe Ahrar - - Involved in mining construction and decorative stones.
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