Visa application by post

I want to submit my visa application by post which address should I use to send all documents:
Address: Ground Floor, 570 ST Kilda Rd., Melbourne, VIC 3004, Australia
Mailing Address: P.O. Box 7227, ST Kilda Rd., Melbourne, VIC 3004

Do I need to send in a returned registered envelop all of the following items:
1. My passport (original)
2. Visa application form (duly filled up and signed) - for Beijing
3. Copy of drivers licence
4. Invitation letter from a medical centre in Beijing to treat a patient
5. Payment authorisation form
6. Copy of Airlines ticket - (return ticket)

Thanks
Quazi Faruq