Jacek Majewski Jackal.works

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

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

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

43.23.Z - Installation of insulation

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

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