74.10.Z - Specialised design activities
27.12.Z - Manufacture of electricity distribution and control apparatus
33.14.Z - Repair and maintenance of electrical equipment
33.20.Z - Installation of industrial machinery and equipment and outfit
41.20.Z - Building works related to erection of residential and non-residential buildings
42.22.Z - Works related to construction of telecommunications and electricity lines
42.99.Z - Works related to construction of other civil engineering projects not elsewhere classified
43.12.Z - Site preparation
43.21.Z - Electrical installation
71.11.Z - Architectural activities
71.12.Z - Engineering activities and related technical consultancy
74.90.Z - Other professional, scientific and technical activities not elsewhere classified