Between 01Nov. and 31Dec. 2013, China Airlines offers 15% discount (not in conjunction with other promotional offers, except mileage offset program) on in-flight duty free items (except tobacco and selected items).
During the same period, Paragon, Emerald and corporate flyer card members when present their membership cards may enjoy an additional 5% discount.
We welcome you to shop online for duty-free products before departure (https://calec.china-airlines.com/eshopping/get_pnr.asp).