43.21.Z - Electrical installation
43.99.Z - Other specialised construction activities not elsewhere classified
95.12.Z - Repair and maintenance of (tele)communication equipment
80.20.Z - Security systems service activities
80.10.Z - Private security activities, excluding security systems service activities
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
47.91.Z - Retail sale via mail order houses or via internet
47.42.Z - Retail sale of telecommunications equipment in specialised stores
47.19.Z - Other retail sale in non-specialised stores
46.69.Z - Wholesale of other machinery and equipment
46.52.Z - Wholesale of electronic and telecommunications equipment and parts thereof
33.12.Z - Repair and maintenance of machinery
43.39.Z - Other building completion and finishing
43.29.Z - Other construction installation
43.22.Z - Plumbing, heat and air-conditioning installation
43.11.Z - Demolition
42.22.Z - Works related to construction of telecommunications and electricity lines
42.11.Z - Works related to construction of roads and motorways
41.20.Z - Building works related to erection of residential and non-residential buildings
33.20.Z - Installation of industrial machinery and equipment and outfit
33.19.Z - Repair and maintenance of other equipment
33.14.Z - Repair and maintenance of electrical equipment
33.13.Z - Repair and maintenance of electronic and optical equipment
