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
28.11.Z - Manufacture of engines and turbines, except aircraft, vehicle and cycle engines
33.14.Z - Repair and maintenance of electrical equipment
33.20.Z - Installation of industrial machinery and equipment
35.14.Z - Distribution of electricity
46.63.Z - Wholesale of mining, construction and civil engineering machinery
46.69.Z - Wholesale of other 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
