46.14.Z - Activities of agents involved in the wholesale of machinery, industrial equipment, ships and aircraft
26.11.Z - Manufacture of electronic components
26.30.Z - Manufacture of communication equipment
28.99.Z - Manufacture of other special-purpose machinery n.e.c.
30.30.Z - Manufacture of air and spacecraft and related machinery
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
72.20.Z - Research and experimental development on social sciences and humanities
74.10.Z - Specialised design activities
74.90.Z - Other professional, scientific and technical activities not elsewhere classified