42.22.Z - Works related to construction of telecommunications and electricity lines
61.20.Z - Wireless telecommunications activities, excluding satellite telecommunications activities
95.12.Z - Repair and maintenance of (tele)communication equipment
95.11.Z - Repair and maintenance of computers and peripheral equipment
74.90.Z - Other professional, scientific and technical activities not elsewhere classified
71.12.Z - Engineering activities and related technical consultancy
63.11.Z - Data processing, hosting and related activities
62.09.Z - Other information technology and computer service activities
62.02.Z - Computer consultancy activities
61.90.Z - Other telecommunications activities
61.30.Z - Satellite telecommunications activities
33.13.Z - Repair and maintenance of electronic and optical equipment
43.99.Z - Other specialised construction activities not elsewhere classified
43.34.Z - Painting and glazing
43.33.Z - Floor and wall covering
43.32.Z - Joinery installation
43.31.Z - Plastering
43.29.Z - Other construction installation
43.21.Z - Electrical installation
42.21.Z - Works related to construction of transmission pipelines and distribution networks
33.20.Z - Installation of industrial machinery and equipment and outfit
