Definition / Belongs to this divisionThis subsector includes the production of large quantities of electricity, the transmission of electricity from electricity producers to distribution stations, and the distribution of electricity to end-users.

Definition / Belongs to this divisionThis division includes:
- manufacture of industrial refrigerating or freezing equipment, including their parts and components
- manufacture of air conditioning equipment (including vehicles)
- manufacture of non-domestic ventilation equipment (fans)
- manufacture of heat exchangers
- manufacture of air or gas liquefaction equipment
- manufacture of ceiling and facade ventilation equipment (gable, roof fan, etc.)
It does not belong to this sectorThis division excludes:
- manufacture of household refrigerating and freezing equipment, see 27.51
- manufacture of household fans, see 27.51
It does not belong to this branch - Hungarian supplementThis division excludes - Hungarian supplement:
- the heat pump, see 28.21

Definition / Belongs to this divisionThis division includes the activities of the following organizations:
- international organizations such as the United Nations and its specialized agencies and regional bodies, the International Monetary Fund, the World Bank, the Customs Cooperation Council, the Organization for Economic Cooperation and Development, the Organization of the Petroleum Exporting Countries, the European Community, the European Free Trade Association, OECD, OPEC, etc.
also belongs to this sectorThis division also includes:
- diplomatic missions and consular posts determined primarily by their place of business and not by the country they represent

Definition / Belongs to this divisionThis division includes:
- tank production
- manufacture of armored amphibians
- manufacture of other military fighting vehicles
It does not belong to this sectorThis division excludes:
- manufacture of weapons and ammunition, see 25.40