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
42.22.Z - Works related to construction of telecommunications and electricity lines
43.21.Z - Electrical installation
43.22.Z - Plumbing, heat and air-conditioning installation
43.29.Z - Other construction installation
46.73.Z - Wholesale of wood, construction materials and sanitary equipment
47.78.Z - Other retail sale of new goods in specialised stores
47.91.Z - Retail sale via mail order houses or via internet
47.99.Z - Other retail sale not in stores, stalls or markets
