Janusz Wiśniewski Usługi Spawalniczo-Monterskie i Budowlane

23.62.Z - Production of gypsum building products

25.11.Z - Production of metal constructions and their parts

25.22.Z - Production of other tanks, reservoirs, and metal containers

25.53.Z - Mechanical processing of metal parts

28.25.Z - Manufacture of industrial refrigeration, ventilation, and air-conditioning equipment

33.11.Z - Repair and maintenance of metal products

33.12.Z - Repair and maintenance of machinery

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

42.22.Z - Works related to the construction of telecommunications and electrical lines

43.31.Z - Plastering

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

43.34.Z - Painting and glazing

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