All goods sent to destinations outside Hong Kong by post, whether in letter packets, packets or parcels must be declared to Customs on special forms available at post offices. In order that the mail item can be handled and delivered correctly at the destination, the forms should be completed in English or a language which is accepted in the destination.
On the other hand, postal administrations of certain destinations request senders to submit electronic customs declaration before sending mails, for details on electronic customs declaration requirements, please click here.