XYZ ELEKTRO Jacek Walczak

43.21.Z - Electrical installation

33.14.Z - Repair and maintenance of electrical equipment

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

42.22.Z - Works related to construction of telecommunications and electricity lines

43.11.Z - Demolition

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

71.20.B - Other technical testing and analysis