27.31.Z - Manufacture of fibre optic cables
43.29.Z - Other construction installation
74.90.Z - Other professional, scientific and technical activities not elsewhere classified
74.10.Z - Specialised design activities
71.12.Z - Engineering activities and related technical consultancy
71.11.Z - Architectural activities
62.09.Z - Other information technology and computer service activities
62.03.Z - Computer facilities management activities
62.02.Z - Computer consultancy activities
62.01.Z - Computer programming activities
43.99.Z - Other specialised construction activities not elsewhere classified
43.91.Z - Roofing activities
43.39.Z - Other building completion and finishing
43.34.Z - Painting and glazing
43.33.Z - Floor and wall covering
43.32.Z - Joinery installation
43.31.Z - Plastering
27.32.Z - Manufacture of other electronic and electric wires and cables
43.22.Z - Plumbing, heat and air-conditioning installation
43.21.Z - Electrical installation
43.13.Z - Test drilling and boring
43.12.Z - Site preparation
43.11.Z - Demolition
42.22.Z - Works related to construction of telecommunications and electricity lines
42.21.Z - Works related to construction of transmission pipelines and distribution networks
41.20.Z - Building works related to erection of residential and non-residential buildings
41.10.Z - Realization of building projects related to erection of buildings
27.90.Z - Manufacture of other electrical equipment
27.52.Z - Manufacture of non-electric domestic appliances
27.51.Z - Manufacture of electric domestic appliances
27.40.Z - Manufacture of electric lighting equipment
27.33.Z - Manufacture of installing equipment