A股海南板块拉升，海汽集团触及涨停

Core Viewpoint - The Hainan Free Trade Port is set to officially start its full island closure operation on December 18, 2025, following approval from the Central Committee of the Communist Party of China [1] Group 1: Market Reaction - Hainan's stock market saw a surge, with Haiqi Group hitting the daily limit, and other companies like Hainan Highway, Haima Automobile, Caesar Travel, Luoniushan, and Hainan Rubber also experiencing gains [1] Group 2: Policy Developments - National authorities are conducting research on tax policies for certain imported goods for Hainan residents to enhance their sense of gain [1] - A new round of optimization and adjustment of the offshore duty-free policy is being studied to increase its attractiveness and promote the return of overseas consumption [1]