Procedure:
1) Documents should be notarized by any notary public in QLD.
2) The notarized documents should be authenticated (NOT apostilled) by the Departments of Foreign Affairs and Trade or its Office in States or Territories.
3) Apply for the documents authentication from the Chinese Embassy or relevant Consulate General where the documents notarized but not authenticated, in accordance with consular regions.
For example, if your documents are notarized in South Australia and authenticated in DFAT's office in Sydney, they should be authenticated in the Chinese Consulate General in Adelaide but not the Consulate General in Sydney.
Documents to be used in the Hong Kong or Macao SAR need no authentication from Chinese Embassy or Consulates General if they have been apostilled by Departments of Foreign Affairs and Trade or its Office in States or Territories.