43.21.Z - Electrical installation
41.10.Z - Realization of building projects related to erection of buildings
42.22.Z - Construction of utility projects for electricity and telecommunications
43.2 - Electrical, plumbing and other construction installation activities
61.10.Z - Wired telecommunications activities
61.20.Z - Telecommunication reselling activities and intermediation service activities for telecommunication
77.33.Z - Rental and leasing of office machinery, equipment and computers
77.39.Z - Rental and leasing of other machinery, equipment and tangible goods n.e.c.
95.11.Z - Repair and maintenance of computers and peripheral equipment
95.12.Z - Repair and maintenance of (tele)communication equipment
