F-system Dawid Fiejdasz

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

33.12.Z - Repair and maintenance of machinery

33.14.Z - Repair and maintenance of electrical devices

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

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

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

43.21.Z - Installation of electrical systems

43.23.Z - Installation of insulation

43.35.Z - Performing other finishing construction works

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

68.12.A - Development of residential building projects

68.12.B - Development of non-residential building projects

68.12.C - Development of building projects

71.12.B - Engineering activities and related technical consultancy

71.20.B - Inspection and issuing opinions on the technical condition of chimneys and ventilation ducts

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

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

95.22.Z - Repair and maintenance of household appliances and equipment for household and gardening use