43.21.Z - Electrical installation
43.31.Z - Plastering
80.20.Z - Security systems service activities
74.10.Z - Specialised design activities
71.12.Z - Engineering activities and related technical consultancy
43.99.Z - Other specialised construction activities not elsewhere classified
43.91.Z - Roofing activities
43.39.Z - Other building completion and finishing
43.34.Z - Painting and glazing
43.33.Z - Floor and wall covering
43.32.Z - Joinery installation
33.12.Z - Repair and maintenance of machinery
43.29.Z - Other construction installation
43.22.Z - Plumbing, heat and air-conditioning installation
42.22.Z - Works related to construction of telecommunications and electricity lines
42.11.Z - Works related to construction of roads and motorways
41.20.Z - Building works related to erection of residential and non-residential buildings
41.10.Z - Realization of building projects related to erection of buildings
33.20.Z - Installation of industrial machinery and equipment and outfit
33.14.Z - Repair and maintenance of electrical equipment
