Cdf Hainan can buy direct mail duty-free. When passengers buy duty-free goods in duty-free shops on outlying islands with valid identity documents and information on outlying islands, they can choose to pick up the goods by mail in addition to the designated areas of airports, railway stations and docks. The recipient, payer and buyer who choose to deliver by mail should be the shopping passenger himself, and the delivery address is outside Hainan Province.

Duty-free shops:

With the approval of the General Administration of Customs, business units set up sales places and supervised warehouses for storing duty-free goods in People's Republic of China (PRC) and the State Council or places approved by their authorized departments to sell and supply duty-free goods to specific targets. Duty-free shops in China mainly include port duty-free shops, traffic duty-free shops, local duty-free shops, diplomatic duty-free shops, ship supplies duty-free shops and foreign exchange duty-free shops for Chinese people going abroad. Duty-free shops in every country have different shopping methods. For example, when shopping in a duty-free shop in Korea, you must provide a passport and a return ticket. If you buy something, you can take it away if it is a Korean brand, but you can't take it away if it is a foreign brand. You must pick it up at the airport when you come back. There is a limit to the quantity.