42.22.Z - Works related to construction of telecommunications and electricity lines
33.20.Z - Installation of industrial machinery and equipment and outfit
41.10.Z - Realization of building projects related to erection of buildings
41.20.Z - Building works related to erection of residential and non-residential buildings
42.11.Z - Works related to construction of roads and motorways
42.21.Z - Works related to construction of transmission pipelines and distribution networks
42.99.Z - Works related to construction of other civil engineering projects not elsewhere classified
43.11.Z - Demolition
43.12.Z - Site preparation
43.21.Z - Electrical installation
43.22.Z - Plumbing, heat and air-conditioning installation
43.29.Z - Other construction installation
71.11.Z - Architectural activities
71.12.Z - Engineering activities and related technical consultancy
74.90.Z - Other professional, scientific and technical activities not elsewhere classified
80.20.Z - Security systems service activities
