43.22.Z - Plumbing, heat and air-conditioning installation
23.61.Z - Manufacture of concrete products for construction purposes
25.62.Z - Mechanical working of metal elements
33.14.Z - Repair and maintenance of electrical equipment
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
43.21.Z - Electrical installation
43.29.Z - Other construction installation
43.32.Z - Joinery installation
43.39.Z - Other building completion and finishing
43.99.Z - Other specialised construction activities not elsewhere classified
46.13.Z - Agents involved in the sale of timber and building materials
46.73.Z - Wholesale of wood, construction materials and sanitary equipment
47.19.Z - Other retail sale in non-specialised stores
47.99.Z - Other retail sale not in stores, stalls or markets
77.32.Z - Rental and leasing of construction machinery and equipment