免税概念活跃，平潭发展、厦门港务涨停，海南机场等上扬

Core Viewpoint - The announcement by the Ministry of Finance, General Administration of Customs, and State Taxation Administration regarding the adjustment of Hainan's duty-free shopping policy is expected to boost the duty-free retail sector, leading to significant stock price increases for related companies. Group 1: Policy Changes - The range of duty-free products for travelers from Hainan has been expanded from 45 categories to 47 categories, now including pet supplies, portable musical instruments, micro drones, and small appliances [1] - Domestic products such as clothing, footwear, ceramics, silk scarves, coffee, and tea will now be allowed for sale in duty-free shops, with VAT and consumption tax exemptions [1] - The minimum age for duty-free shopping has been raised from 16 to 18 years old [1] Group 2: Shopping Limits and Access - Departing travelers can enjoy the duty-free policy, with purchases counting towards an annual duty-free shopping limit of 100,000 RMB, with no limit on the number of transactions [1] - Island residents with departure records within a calendar year can purchase duty-free items on an "immediate purchase and pick-up" basis without transaction limits [1]