41.20.Z - Building works related to erection of residential and non-residential buildings
08.12.Z - Operation of gravel and sand pits and mining of clay and kaolin
23.69.Z - Manufacture of other articles of concrete, plaster and cement
23.99.Z - Manufacture of other non-metallic mineral products n.e.c.
41.10.Z - Realization of building projects related to erection of buildings
43.39.Z - Other building completion and finishing
71.12.Z - Engineering activities and related technical consultancy
71.20.B - Inspection and issuance of opinions on the technical condition of chimneys and ventilation ducts
74.10.Z - Specialised design activities
85.59.B - Courses and training related to acquiring knowledge, skills, and professional qualifications in non-school forms