42.22.Z - Construction of utility projects for electricity and telecommunications
33.14.Z - Repair and maintenance of electrical equipment
35.11.Z - Production of electricity from non-renewable sources
41.20.Z - Building works related to erection of residential and non-residential buildings
42.21.Z - Construction of utility projects for fluids
43.21.Z - Electrical installation
43.29.Z - Other construction installation
68.10.Z - Buying and selling of own real estate
71.12.Z - Engineering activities and related technical consultancy
74.10.Z - Specialised design activities