42.12.Z - Works related to construction of railways and underground railways
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
42.22.Z - Works related to construction of telecommunications and electricity lines
42.99.Z - Works related to construction of other civil engineering projects not elsewhere classified
43.22.Z - Plumbing, heat and air-conditioning installation
46.43.Z - Wholesale of electrical household appliances
46.69.Z - Wholesale of other machinery and equipment
46.73.Z - Wholesale of wood, construction materials and sanitary equipment
46.77.Z - Wholesale of waste and scrap
46.90.Z - Non-specialised wholesale trade
