72.19.Z - Other research and experimental development on natural sciences and engineering
26.51.Z - Manufacture of instruments and appliances for measuring, testing and navigation
27.11.Z - Manufacture of electric motors, generators and transformers
27.12.Z - Manufacture of electricity distribution and control apparatus
27.90.Z - Manufacture of other electrical equipment
28.92.Z - Manufacture of machinery for mining, quarrying and construction
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
74.90.Z - Other professional, scientific and technical activities not elsewhere classified
82.99.Z - Other business support service activities not elsewhere classified
