71.12.Z - Engineering activities and related technical consultancy
41.10.Z - Realization of building projects related to erection of buildings
41.20.Z - Building works related to erection of residential and non-residential buildings
42.21.Z - Works related to construction of transmission pipelines and distribution networks
42.22.Z - Works related to construction of telecommunications and electricity lines
43.21.Z - Electrical installation
43.22.Z - Plumbing, heat and air-conditioning installation
43.29.Z - Other construction installation
43.99.Z - Other specialised construction activities not elsewhere classified
71.20.B - Other technical testing and analysis
74.90.Z - Other professional, scientific and technical activities not elsewhere classified
85.59.B - Other out-of-school forms of education, not elsewhere classified
85.60.Z - Educational support activities
