KRZYSZTOF SZCZAWIŃSKI

42.11.Z - Works related to the construction of roads and highways

42.21.Z - Works related to the construction of transmission pipelines and distribution networks

42.22.Z - Works related to the construction of telecommunications and electrical lines

42.99.Z - Works related to the construction of other civil engineering and water engineering objects, not classified elsewhere

43.12.Z - Site preparation for construction

43.21.Z - Installation of electrical systems

43.24.Z - Installation of other building systems

43.32.Z - Installation of building carpentry

43.33.Z - Flooring, wallpapering, and cladding of walls

43.35.Z - Performing other finishing construction works

43.91.Z - Masonry works

43.99.Z - Other specialized construction works, not classified elsewhere

49.41.Z - Road freight transport

52.21.B - Other support activities for land transport

52.24.C - Cargo handling at other handling points

81.22.B - Other cleaning of buildings and industrial premises, not elsewhere classified