82.11.Z - Office administrative service activities
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
43.21.Z - Electrical installation
43.22.Z - Plumbing, heat and air-conditioning installation
43.29.Z - Other construction installation
43.31.Z - Plastering
43.33.Z - Floor and wall covering
43.34.Z - Painting and glazing
43.39.Z - Other building completion and finishing
43.91.Z - Roofing activities
43.99.Z - Other specialised construction activities not elsewhere classified
82.19.Z - Photocopying, document preparation and other specialised office support activities
