Underpaid mail items are subject to surcharge by Hongkong Post. This department will not accept underpaid mail items, which will be returned to the sender (with return address) or disposed of (without return address) by the Hongkong Post. For proper delivery of your mail items to the department, and to avoid unnecessary delivery delay or unsuccessful delivery, please ensure your mail items bear sufficient postage with return address before posting.     [Please note details about postage and pay attention to the New Postage Structure effective from 26 September 2022]