Konrad Januła

33.14.Z - Repair and maintenance of electrical devices

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

42.22.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

43.23.Z - Installation of insulation

43.24.Z - Installation of other building systems

43.32.Z - Installation of building carpentry

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

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

81.22.A - Chimney, hearth, furnace, and ventilation duct cleaning

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