“Sofia Subway Expansion Project: Third Metro - Botevgradsko Shose Depot - Vladimir Vazov Blvd. - Central City - Ovcha Kupel, First Stage”
“Metropoliten – Sofia” – First metro-radius “Suspension of radio cable on messengers from metro station 9 to metro station 13”
“Metropoliten – Sofia” – First metro radius “Suspension of radio cable on messengers from metro station 9 to metro station 13”
“Metro Sofia, first metro diameter, second radius” – “Metro unit km 8+043 – km 10+307” – Assembly and power supply of contact rail.
“Iron road and contact rail with electrical supply for lines from № 18 to №26 in depot “Obelia” - Sofia city