HAIKOU, April 26 (Xinhua) -- Fifteen years after China launched the offshore duty-free shopping policy in Hainan, its southernmost island province, customs authorities have supervised a cumulative 286.4 billion yuan (about 41.76 billion U.S. dollars) in offshore duty-free sales, involving 347 million items, according to local customs authorities.

Since its launch on April 20, 2011, the policy has undergone multiple rounds of adjustments and optimization. Today, Hainan hosts 12 offshore duty-free stores across the island.