| SITC | Standard International Trade Classification
(classification system is maintained by the United Nations) | ███ | ███ | | |
| BEC | The standard of statistical classification of BEC (Broad Economic Categories) is upheld by the UN and it is based on SITC-nomenclature. | ███ | ███ | | |
| NACE | National industrial classification based on Statistical Classification of Economic Activities in the European Community Nomenclature générale des Activités économiques dans les Communautés européennes | ███ | ███ | | |
| CPA | CPA = Classification of Products by Activities | ███ | ███ | | |
| CN | The Combined Nomenclature is the common nomenclature of the European Community. | ███ | ███ | | |