Can the notarization of the declaration of the same person in the old and new American passports be handled in China?

No, but you don't have to go back to Canada. You can find someone else. But I want your original signature.

The process of notarization and authentication for the same person of American passport;

1? First of all, the information provided is notarized by the local notary office.

The second is to send it to the US Secretary of State for certification.

Finally, it was sent to the China Embassy and Consulate in the United States for certification.

Time for the same person to be notarized in the United States: 3- 15 working days.

Remarks: Notarization and authentication procedures are handled step by step, authentication is relative to notarization, and authentication is to identify the attributes of signatures and seals on documents. Documents that have passed the three-level certification can be used in China and have the same legal effect as those issued in China.