4CON Tomasz Dąbrowski

42.12.Z - Works related to the construction of railways and underground railways

42.13.Z - Works related to the construction of bridges and tunnels

43.12.Z - Site preparation for construction

43.50.Z - Specialized construction works in the field of civil and water engineering

46.83.Z - Wholesale trade of wood, construction materials, and sanitary equipment

49.20.Z - Rail freight transport

49.41.Z - Road freight transport

52.24.C - Cargo handling at other handling points