Piotr Zientara HYLTREX

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

25.61.Z - Treatment and coating of metals

25.62.Z - Mechanical working of metal elements

43.11.Z - Demolition

43.12.Z - Site preparation

43.13.Z - Test drilling and boring

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

49.41.Z - Freight transport by road

51.10.Z - Passenger air transport