42.22.Z - Construction of utility projects for electricity and telecommunications
26.51.Z - Manufacture of instruments and appliances for measuring, testing and navigation
27.12.Z - Manufacture of electricity distribution and control apparatus
33.20.Z - Installation of industrial machinery and equipment
35.13.Z - Transmission of electricity
41.10.Z - Realization of building projects related to erection of buildings
43.21.Z - Electrical installation
71.12.Z - Engineering activities and related technical consultancy
74.10.Z - Specialised design activities
78.30.Z - Other human resources provision