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 Engineering infrastructure 
  
• water pipelines; 
 • sewage; 
 • central heating systems; 
 • installation collectors of precast concrete elements; 
 • installation tunnels; 
 • electric supply, telephone lines; 
 
  
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 Sites 
- Civil engineering infrastructure of Obelya 2, Suha Reka, Druzba, Ovcha Kupel 
housing complexes in the city of Sofia, Bulgaria; 
 
- Water supply pipelines: Silistra - Dobrich, samoranovo - Bobov dol, Dimitrovgrad 
thermoelectric power plant - Yabulkovo; 
 
- Reconstruction of the water pipelines in the town of Pernik funded by the World 
Bank; 
 
- Water supply systems with pipelines: Plovdivtsi-Madan - length 22 km; Luki - 
14 km, etc. 
 
- Iskur railway station installation collector; 
 
- Sofia-Iztok thermoelectric power plant circulating water installation; 
 
- Airport of Sofia - pipelines repairs and replacement; 
 
- Main water collector in Zlatograd; 
 
- main water collector and sewage in the town of Startsevo; 
 
- Reconstruction of the central heating system in the city of Sofia. The total 
length of the pipes is over 16 000. The construction works were funded by the 
International Bank for Reconstruction and Development and the European Bank for 
Reconstruction and Development.
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