43.21.Z - Electrical installation
61.20.Z - Wireless telecommunications activities, excluding satellite telecommunications activities
95.21.Z - Repair and maintenance of consumer electronics
95.12.Z - Repair and maintenance of (tele)communication equipment
95.11.Z - Repair and maintenance of computers and peripheral equipment
80.20.Z - Security systems service activities
62.09.Z - Other information technology and computer service activities
62.03.Z - Computer facilities management activities
61.90.Z - Other telecommunications activities
61.30.Z - Satellite telecommunications activities
33.13.Z - Repair and maintenance of electronic and optical equipment
61.10.Z - Wired telecommunications activities
43.99.Z - Other specialised construction activities not elsewhere classified
43.39.Z - Other building completion and finishing
43.34.Z - Painting and glazing
43.29.Z - Other construction installation
42.22.Z - Works related to construction of telecommunications and electricity lines
33.20.Z - Installation of industrial machinery and equipment and outfit
33.14.Z - Repair and maintenance of electrical equipment
