INSTAL - MAR PRZEDSIĘBIORSTWO WIELOBRANŻOWE MARIUSZ ZAKRZEWSKI

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

33.11.Z - Repair and maintenance of metal products

33.12.Z - Repair and maintenance of machinery

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

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

43.12.Z - Site preparation for construction

43.21.Z - Installation of electrical systems

43.24.Z - Installation of other building systems

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

43.91.Z - Masonry works

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

46.43.Z - Wholesale trade of electrical household goods