Zakład Instalacji Sanitarnych Wod. Kan. Co i Gaz. Piotr Ciężkowski

43.21.Z - Installation of electrical systems

42.11.Z - Works related to the construction of roads and highways

43.13.Z - Performing excavations and geological-engineering drilling

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

43.31.Z - Plastering

43.32.Z - Installation of building carpentry

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

43.35.Z - Performing other finishing construction works

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