43.21.Z - Electrical installation
62.02.Z - Computer consultancy activities
47.42.Z - Retail sale of telecommunications equipment in specialised stores
47.43.Z - Retail sale of audio and video equipment in specialised stores
47.91.Z - Retail sale via mail order houses or via internet
47.99.Z - Other retail sale not in stores, stalls or markets
61.10.Z - Wired telecommunications activities
61.20.Z - Wireless telecommunications activities, excluding satellite telecommunications activities
61.30.Z - Satellite telecommunications activities
61.90.Z - Other telecommunications activities
62.01.Z - Computer programming activities
47.41.Z - Retail sale of computers, peripheral units and software in specialised stores
62.03.Z - Computer facilities management activities
62.09.Z - Other information technology and computer service activities
63.11.Z - Data processing, hosting and related activities
63.12.Z - Web portals
74.90.Z - Other professional, scientific and technical activities not elsewhere classified
80.20.Z - Security systems service activities
95.11.Z - Repair and maintenance of computers and peripheral equipment
95.12.Z - Repair and maintenance of (tele)communication equipment
43.13.Z - Test drilling and boring
33.13.Z - Repair and maintenance of electronic and optical equipment
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
42.21.Z - Works related to construction of transmission pipelines and distribution networks
42.22.Z - Works related to construction of telecommunications and electricity lines
43.11.Z - Demolition
43.12.Z - Site preparation
33.12.Z - Repair and maintenance of machinery
43.29.Z - Other construction installation
43.31.Z - Plastering
43.32.Z - Joinery installation
43.33.Z - Floor and wall covering
43.34.Z - Painting and glazing
43.39.Z - Other building completion and finishing
43.91.Z - Roofing activities
43.99.Z - Other specialised construction activities not elsewhere classified
