• ISO 9001:2015
• ISO 45001:2018
• ISO 14001:2015

• BCC: First group of constructions - from second to fifth categories
• BCC: First group of constructions - structures of art. 137, para. 1, item 1, letter "M" and item 4, letter "E" and Item 5 and the letter "E"
• BCC: Second group of constructions - from second to fourth categories
• BCC: Third group of constructions - from second to fifth categories
• BCC: Fourth group of constructions - from second to fifth categories
• BCC: Fifth group of structures

• KRIB
• BAAIK
• AIKB
• KSB

MEDIA COVERAGE

SOFIA's railways celebrates 10 years - as long as Metro Bank, newspaper Telegraph, 29.01 .2008

Mayor Boyko Borisov, Sofia's chief architect Petar Dikov and Deputy Mayor of Transport Velizar Stoilov explained that the Subway is the main priority in the capital.

Going to the Theater in the underground
The Subway in Sofia is one of the best build from the architectural point of view, said the head of the subway Stoyan Bratoev. The last station on Dragan Tsankov blvd. is even used for fashion shows and performances. The station has been constructed by EKSA, with complexed suspended ceiling Hunter Douglas, glass ornaments on the walls of the platform, mineral plasters, construction with sliding doors and unconventional form of a cash box.
Modern vision of the subway station has increased the interest to for presenting performances, small theater presentations, even fashion shows.