22.23.Z - Manufacture of doors and windows of plastic
23.61.Z - Manufacture of concrete products for construction purposes
25.11.Z - Manufacture of metal structures and parts of structures
41.10.Z - Realization of building projects related to erection of buildings
46.13.Z - Activities of agents involved in the wholesale of timber and building materials
72.19.Z - Other research and experimental development on natural sciences and engineering
77.32.Z - Rental and leasing of construction and civil engineering machinery and equipment
77.39.Z - Rental and leasing of other machinery, equipment and tangible goods n.e.c.