42.22.Z - Works related to construction of telecommunications and electricity lines
43.33.Z - Floor and wall covering
74.90.Z - Other professional, scientific and technical activities not elsewhere classified
71.20.B - Other technical testing and analysis
71.12.Z - Engineering activities and related technical consultancy
62.09.Z - Other information technology and computer service activities
61.90.Z - Other telecommunications activities
61.30.Z - Satellite telecommunications activities
61.20.Z - Wireless telecommunications activities, excluding satellite telecommunications activities
61.10.Z - Wired telecommunications activities
47.99.Z - Other retail sale not in stores, stalls or markets
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
25.11.Z - Manufacture of metal structures and parts of structures
43.32.Z - Joinery installation
43.31.Z - Plastering
43.29.Z - Other construction installation
43.22.Z - Plumbing, heat and air-conditioning installation
43.21.Z - Electrical installation
43.11.Z - Demolition
41.20.Z - Building works related to erection of residential and non-residential buildings
33.14.Z - Repair and maintenance of electrical equipment
33.13.Z - Repair and maintenance of electronic and optical equipment
26.30.Z - Manufacture of (tele)communication equipment
26.11.Z - Manufacture of electronic components
25.62.Z - Mechanical working of metal elements
25.61.Z - Treatment and coating of metals