Zbigniew Józef Klawiński, CORTECH

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

41.00.A - Construction work related to the construction of residential buildings

41.00.B - Construction work related to the construction of non-residential buildings

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

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

43.11.Z - Demolition and destruction of buildings

43.12.Z - Site preparation for construction

43.22.Z - Installation of plumbing, heating, and air-conditioning systems

43.23.Z - Installation of insulation

43.31.Z - Plastering

43.32.Z - Installation of building carpentry

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

43.34.Z - Painting and glazing

43.35.Z - Performing other finishing construction works

43.41.Z - Performing roof structures and coverings

43.42.Z - Performing other specialized construction works related to the construction of buildings

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

43.91.Z - Masonry works

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

46.82.Z - Wholesale trade of metals and metal ores

46.85.B - Other wholesale trade of chemical products

46.90.Z - Non-specialized wholesale trade

49.41.Z - Road freight transport

52.21.B - Other support activities for land transport

55.10.Z - Hotels and similar accommodation establishments

55.20.Z - Tourist accommodation and short-term accommodation facilities

55.90.Z - Other accommodation services

68.11.Z - Buying and selling real estate on own account

68.12.A - Development of residential building projects

68.12.B - Development of non-residential building projects

68.12.C - Development of building projects

68.20.Z - Rental and management of own or leased real estate

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

91.30.Z - Conservation and restoration activities and other supporting activities for cultural heritage