For a foreign citizen living in Canada, documents issued in Canada to be used in China should be notarized first by a local Notary Public, a lawyer or a commissioner of oaths, and then authenticated by the Notary Chamber of Québec or the government of New Brunswick before being submitted to the Application Centre.
For a Chinese citizen, documents not directly notarized by the Chinese General Consulate in Montreal need to be notarized by a local Notary Public, a lawyer or a commissioner of oaths first, and then authenticated by the Notary Chamber of Québec or the government of New Brunswick before being submitted to the Application Centre.
If the authenticated file will be usred in HK SAR, please contact the visa center in Ottawa and do the authentication in the Chinese Embassy.