We would like to inform that KOLTECH is a company associated in the Polish Chamber of Railway Equipment Producers and Railway Service Providers. We encourage you to visit the following links!
https://kolejowefirmy.pl/lista-firm/wpis/przedsiebiorstwo-projektowo-wdrozeniowe-koltech-sp-z-o-o/
https://kolejowefirmy.pl/katalog-firm/ (pages 61 and 120)
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