MICHAŁ KOWALCZYK

71.20.B - Other technical testing and analysis

25.62.Z - Mechanical working of metal elements

41.20.Z - Building works related to erection of residential and non-residential buildings

43.21.Z - Electrical installation

43.22.Z - Plumbing, heat and air-conditioning installation

43.29.Z - Other construction installation

43.31.Z - Plastering

43.32.Z - Joinery installation

43.33.Z - Floor and wall covering

43.34.Z - Painting and glazing

43.39.Z - Other building completion and finishing

43.91.Z - Roofing activities

43.99.Z - Other specialised construction activities not elsewhere classified

45.20.Z - Maintenance and repair of motor vehicles, excluding motorcycles

45.31.Z - Wholesale trade of motor vehicle parts and accessories, excluding motorcycles

45.32.Z - Retail trade of motor vehicle parts and accessories, excluding motorcycles

47.99.Z - Other retail sale not in stores, stalls or markets

49.41.Z - Freight transport by road

74.90.Z - Other professional, scientific and technical activities not elsewhere classified