Polish company that specializes in producing and modernizing trams.
[1] The company was created in 1977 in Wroclaw after the conversion of the MPK Wroclaw tram-repair facility into a private company.
The company filed for bankruptcy in 2016 and was eventually liquidated.
[2] There are 3 models of trams constructed by Protram: The company does the modernization of the tram Konstal 105Na into Konstal 105NWr as well.
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