Embassy Authentication refers to the authentication of commercial documents and files submitted by Chinese export companies by foreign embassies, confirming and proving the authenticity of a signature or seal on the documents. The embassy stamps the commercial proof notarization documents, verifying the authenticity of a notary or authentication agency's signature and seal. The purpose of obtaining commercial proof authentication is to ensure that the commercial proof notarization documents issued by China are recognized by the authorities in the destination country, thus avoiding any suspicion regarding the authenticity of the signature or seal on the documents and affecting the extraterritorial legal effectiveness of the documents.