It would be eligible for duty-free re-entry if you had completed a registration on departure.
Please bring the articles to be taken abroad to the customs service center at airport prior to checking flight, and complete a “Record of To-be-reimported Articles by Outward Passengers or Crew”.
The customs officer on duty will return a stamped copy, which is not transferable, following a comparison between the articles and the written record and complete the registration. Articles registered will be exempted from duty on your subsequent return.
Notes: The charges of foreign repairs or alterations to articles are dutiable.
In case of any discrepancy between the English version and the Chinese version, the latter shall prevail.
General Affairs Section, Inspection Division