The first national metro train Mar 31, 2021 The national metro train has been built in cooperation with various domestic companies, including 18 knowledge-based companies and 4 industrial complexes such as Tehran Wagon Manufacturing Company, Jihad Daneshgahi, Mapna and Erico. This design and construction is based on the experience of the past 20 years in using three generations of wagons. It is accepted that the design and construction of propulsion system, air conditioning, train body, brakes, carriageway, doors, interior decoration and intelligent information system have been among the most important measures taken by domestic companies to produce the national metro train. Hamid Raza Darajati https://www.tehranpicture.ir/u/8Nt