43.21.Z - Electrical installation
26.20.Z - Manufacture of computers and peripheral equipment
26.30.Z - Manufacture of(tele)communication equipment
33.12.Z - Repair and maintenance of machinery
33.13.Z - Repair and maintenance of electronic and optical equipment
33.14.Z - Repair and maintenance of electrical equipment
46.51.Z - Wholesale of computers, peripheral equipment and software
46.52.Z - Wholesale of electronic and telecommunications equipment and parts thereof
47.41.Z - Retail sale of computers, peripheral units and software in specialised stores
47.91.Z - Retail sale via mail order houses or via Internet
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
62.02.Z - Computer consultancy activities
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
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
95.21.Z - Repair and maintenance of consumer electronics