The so-called ‘double authentication’ refers to the requirement that before foreign-related notarization certificates or other proof documents issued by relevant institutions in mainland China are used abroad, they must be authenticated by the Consular Department of the Ministry of Foreign Affairs of China or the local foreign affairs office entrusted by the Ministry of Foreign Affairs, and then they need to be authenticated by the consular office of the country’s embassy or consulate in China according to the requirements of the country where the documents are to be used before they can be accepted by the country where the documents are to be used.
