05.10.Z - Mining of hard coal
05.20.Z - Mining of lignite
06.10.Z - Extraction of crude petroleum
09.10.Z - Support activities for petroleum and natural gas extraction
09.90.Z - Support activities for other mining and quarrying
19.20.Z - Manufacture of refined petroleum products and fossil fuel products
20.11.Z - Manufacture of industrial gases
26.51.Z - Manufacture of instruments and appliances for measuring, testing and navigation
28.29.Z - Manufacture of other general-purpose machinery n.e.c.
28.99.Z - Manufacture of other special-purpose machinery n.e.c.
35.11.Z - Production of electricity from non-renewable sources
35.21.Z - Manufacture of gas
46.71.Z - Wholesale of motor vehicles
46.76.Z - Wholesale of other intermediate products
46.90.Z - Non-specialised wholesale trade
49.41.Z - Freight transport by road
49.50.A - Pipelines transportation of natural gas" or "gas pipeline transportation
49.50.B - Pipelines transportation of other goods
52.10.B - Storage and warehousing of other goods
62.01.Z - Computer programming activities
63.99.Z - Other information service activities not elsewhere classified
68.31.Z - Intermediation service activities for real estate activities
68.32.Z - Management of real estate on a fee or contract basis
70.21.Z - Public relations and communication activities
70.22.Z - Business and other management consultancy activities
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
73.20.Z - Market research and public opinion polling
74.10.Z - Specialised design activities
74.90.Z - Other professional, scientific and technical activities not elsewhere classified
78.30.Z - Other human resources provision
81.10.Z - Combined facilities support activities
82.99.Z - Other business support service activities not elsewhere classified
85.59.B - Courses and training related to acquiring knowledge, skills, and professional qualifications in non-school forms
85.60.Z - Educational support activities
96.09.Z - Other personal service activities not elsewhere classified