In the European Union market "CE" mark is a mandatory certification mark, whether it is the European Union within the enterprise production of products, or products produced in other countries, in order to be free to circulate in the European Union market, must be affixed with the "CE" mark to indicate that the product complies with the European Union "technical harmonization and standardization of new methods" directive basic requirements. New Approaches to Technical Harmonization and Standardization" directive of the basic requirements. This is a mandatory requirement for products under EU law.