28.99.Z - Manufacture of other special-purpose machinery n.e.c.
25.1 - Manufacture of structural metal products
25.6 - Manufacture of cutlery, tools and general hardware
25.9 - Manufacture of other fabricated metal products
28 - Manufacture of machinery and equipment n.e.c.
33 - Repair, maintenance and installation of machinery and equipment
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
72.19.Z - Other research and experimental development on natural sciences and engineering
74.90.Z - Other professional, scientific and technical activities not elsewhere classified