42.21.Z - Works related to construction of transmission pipelines and distribution networks
43.21.Z - Electrical installation
77.32.Z - Rental and leasing of construction machinery and equipment
71.12.Z - Engineering activities and related technical consultancy
71.11.Z - Architectural activities
52.21.Z - Service activities incidental to land transportation
49.41.Z - Freight transport by road
47.30.Z - Retail sale of fuel for motor vehicles in fuel stations
46.77.Z - Wholesale of waste and scrap
46.74.Z - Wholesale of hardware and plumbing and heating equipment and supplies
46.73.Z - Wholesale of wood, construction materials and sanitary equipment
45.20.Z - Maintenance and repair of motor vehicles, excluding motorcycles
43.99.Z - Other specialised construction activities not elsewhere classified
43.34.Z - Painting and glazing
43.33.Z - Floor and wall covering
43.31.Z - Plastering
43.22.Z - Plumbing, heat and air-conditioning installation
08.12.Z - Operation of gravel and sand pits; mining of clays and kaolin
43.13.Z - Test drilling and boring
43.12.Z - Site preparation
43.11.Z - Demolition
42.91.Z - Works related to construction of water projects
42.13.Z - Works related to construction of bridges and tunnels
42.11.Z - Works related to construction of roads and motorways
41.20.Z - Building works related to erection of residential and non-residential buildings
35.14.Z - Trade of electricity
35.11.Z - Production of electricity
33.11.Z - Repair and maintenance of fabricated metal products
25.94.Z - Manufacture of fasteners and screws
25.62.Z - Mechanical working of metal elements
25.61.Z - Treatment and coating of metals
25.11.Z - Manufacture of metal structures and parts of structures
23.61.Z - Manufacture of concrete products for construction purposes
