Building and reconstruction works, Concrete articles, Concrete construction elements, Concrete products, Construction engineering, Construction of water supply routes, Crane works, Establishment of external water and sewerage networks , Excavator works, Fence posts; - poles, Ferroconcrete productions, Miningworks, Septics, Sewage system construction, Sewer construction, Sewerage cleaning system, Sewerage construction, Sewerage systems, Sewerage works, Soilworks, Wastewater treatment systems, Water supply and sewerage, Well tackles