80.20.Z - Security systems service activities
80.10.Z - Private security activities, excluding security systems service activities
95.12.Z - Repair and maintenance of (tele)communication equipment
95.11.Z - Repair and maintenance of computers and peripheral equipment
81.30.Z - Landscape service activities
81.29.Z - Other cleaning activities
81.22.Z - Specialised building and industrial cleaning activities
81.21.Z - General cleaning of buildings
81.10.Z - Buildings service support activities
80.30.Z - Investigation activities
42.22.Z - Works related to construction of telecommunications and electricity lines
74.90.Z - Other professional, scientific and technical activities not elsewhere classified
62.09.Z - Other information technology and computer service activities
62.03.Z - Computer facilities management activities
61.20.Z - Wireless telecommunications activities, excluding satellite telecommunications activities
61.10.Z - Wired telecommunications activities
43.39.Z - Other building completion and finishing
43.29.Z - Other construction installation
43.21.Z - Electrical installation
