Mateusz Krawczyk

33.20.Z - Installation of industrial machinery, equipment, and devices

25.51.Z - Coating of metals

25.52.Z - Heat treatment of metals

25.53.Z - Mechanical processing of metal parts

33.12.Z - Repair and maintenance of machinery

33.15.Z - Repair and maintenance of civilian ships and boats

33.18.Z - Repair and maintenance of military combat vehicles, ships, boats, aircraft, and spacecraft

33.19.Z - Repair and maintenance of other equipment and installations

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

43.21.Z - Installation of electrical systems

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

43.23.Z - Installation of insulation

43.24.Z - Installation of other building systems

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

68.12.C - Development of building projects

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