HYDRO-TECH TOMASZ PIEROŃCZYK

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

41.00.A - Construction work related to the construction of residential buildings

41.00.B - Construction work related to the construction of non-residential buildings

43.21.Z - Installation of electrical systems

43.23.Z - Installation of insulation

43.24.Z - Installation of other building systems

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

47.52.Z - Retail sale of small metal products, building materials, paints, and glass

72.10.Z - Scientific research and development in natural and technical sciences

81.21.Z - General cleaning of buildings

81.22.A - Chimney, hearth, furnace, and ventilation duct cleaning

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