In general, documents issued in China are usually consolably authenticated when they are taken abroad for use. Consular authentication is to confirm the last seal and signature on the relevant documents, so that the documents issued in China can be recognized in other countries without affecting the legal validity of the documents abroad due to doubts about the authenticity of the seals and signatures on the documents. According to the requirements of document use, it can be generally divided into "single authentication" and "double authentication". Single certification means that the foreign-related notarized documents issued by domestic notary offices are then certified by the consular department of the Ministry of Foreign Affairs or authorized local provincial and municipal foreign affairs offices; while double certification means that after the completion of "single certification", consular certification is then applied to the embassy of the user country in China.

The procedure for notarization (authentication) of the corresponding legal documents signed by foreign parties is subject to the circumstances.

If the relevant treaty concluded between the party's country and China specifies the relevant certification procedures, it will be implemented in accordance with the provisions of the treaty; if there is no treaty provision, first of all, the country or the region within the country to implement an independent legal system, a notary qualified institution to issue a valid notarized document, and then differentiate the situation according to the following procedures: (1) the country with China has diplomatic relations, sent to China (Mainland) to use the (1) Notarized documents or related documents issued by countries with diplomatic relations with China and sent to China (Mainland) for use, must first be certified by the Ministry of Foreign Affairs of that country or its authorized institutions, and then sent to the Chinese Embassy or Consulate for certification. (2) Notarized documents or related documents issued by countries without diplomatic relations with China and sent to China (Mainland) for use must first be certified by the Ministry of Foreign Affairs of that country or its authorized agency and the embassy or consulate of the country with which China has diplomatic relations, and then be certified by the Chinese embassy or consulate in that third country. Our team has handled notarized authentication of documents from Hong Kong, China, Taiwan and foreign countries, which were adopted by the court.