02.40.Z - Support services to forestry
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 - Construction of roads and motorways
42.12.Z - Construction of railways and underground railways
42.13.Z - Construction of bridges and tunnels
42.21.Z - Construction of utility projects for fluids
42.22.Z - Construction of utility projects for electricity and telecommunications
42.91.Z - Construction of water projects
42.99.Z - Construction of other civil engineering projects n.e.c.
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 - Masonry and bricklaying activities
43.99.Z - Other specialised construction activities n.e.c.
69.20.Z - Accounting, bookkeeping and auditing activities; tax consultancy
70.21.Z - Public relations and communication activities
70.22.Z - Business and other management consultancy activities
71.11.Z - Architectural activities
71.12.Z - Engineering activities and related technical consultancy
71.20.A - Research and analysis related to food quality
71.20.B - Inspection and issuance of opinions on the technical condition of chimneys and ventilation ducts
72.19.Z - Other research and experimental development on natural sciences and engineering
74.90.Z - Other professional, scientific and technical activities not elsewhere classified
80.20.Z - Security systems service activities
85.60.Z - Educational support activities
