42.22.Z - Construction of utility projects for electricity and telecommunications
61.10.Z - Wired telecommunications activities
61.20.Z - Telecommunication reselling activities and intermediation service activities for telecommunication
68.10.Z - Buying and selling of own real estate
68.20.Z - Rental and operating of own or leased real estate
71.11.Z - Architectural activities
71.12.Z - Engineering activities and related technical consultancy
71.20.B - Inspection and issuance of opinions on the technical condition of chimneys and ventilation ducts
72.19.Z - Other research and experimental development on natural sciences and engineering
74.90.Z - Other professional, scientific and technical activities not elsewhere classified
