28.99.Z - Manufacture of other special-purpose machinery n.e.c.
33.12.Z - Repair and maintenance of machinery
33.20.Z - Installation of industrial machinery and equipment
71.20.B - Inspection and issuance of opinions on the technical condition of chimneys and ventilation ducts
72.19.Z - Other research and experimental development on natural sciences and engineering
74.10.Z - Specialised design activities
74.90.Z - Other professional, scientific and technical activities not elsewhere classified
77.39.Z - Rental and leasing of other machinery, equipment and tangible goods n.e.c.
77.40.Z - Leasing of intellectual property and similar products, except copyrighted works
