Islands Hainan passengerduty-free shopping policy since April 20, 2011 officially landed.
海南离岛旅客免税购物政策自2011年4月20日正式落地。
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A few other taxes might also be devolved (mostly minor ones, such as air-passengerduty, and explicitly not big earners such as corporation tax or North Sea oil and gas levies).