42.11.Z - Works related to construction of roads and motorways
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
42.12.Z - Works related to construction of railways and underground railways
42.13.Z - Works related to construction of bridges and tunnels
42.21.Z - Works related to construction of transmission pipelines and distribution networks
42.22.Z - Works related to construction of telecommunications and electricity lines
42.91.Z - Works related to construction of water projects
42.99.Z - Works related to construction of other civil engineering projects not elsewhere classified
43.11.Z - Demolition
43.99.Z - Other specialised construction activities not elsewhere classified
46.73.Z - Wholesale of wood, construction materials and sanitary equipment
68.10.Z - Buying and selling of own real estate
68.20.Z - Rental and operating of own or leased real estate
81.29.Z - Other cleaning activities
