Can birth notarization and birth notarization be handled across provinces and cities? For example, if you go to Anhui for birth notarization, you can go to Shanghai for double recognition.

Anhui province is generally included in the Shanghai consular district of any country that divides its consular certification business in China by consular district. The notarial certificate issued by Anhui Province can be double-certified at the Shanghai Consulate General.

But your single certificate can only be done in this province, that is, Anhui Foreign Affairs Office. If you get it to the Shanghai Foreign Affairs Office, they won't help you. Because all local foreign affairs offices authorized by the Ministry of Foreign Affairs can do single certification, only the seal of the foreign-related notary office in this province and the seal of the foreign-related notary office for the record. In other words, the Shanghai Foreign Affairs Office only has the records of the city's foreign-related notary office, and there is no record of the Anhui notary office, so there is no way to check the authenticity. Naturally, I can't give you a certification.