Kyustendil
English translation is in progress or not avaiable.
Varna
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The subject of activities is: carrying-out projects in railway automation, point heating, radio sound wiring of railway stations, isolated sections and railway transport connections. Later on the range of activities is expanded as follows: design, develop
Sliven
English translation is in progress or not avaiable.
Sofia
English translation is in progress or not avaiable.