A work freight cars , owned by private Italian company , called GCF (Gefer Costruzioni Ferroviarie) standing on railway station Balgarovo.This company participate in the construction and rehabilitation of tracks between Karnobat and Burgas.The web site is following: 
http://www.gefer.it

Digital photo Veselin Malinov , e-mail: malinov.veselin99@gmail.com