21世纪经济报道 记者周潇枭 见习记者张旭 报道 12月18日，海南自贸港将进入全岛封关运作的新阶段。封关后，海南岛全岛将建成一个海关监管特殊区 域，实施以"一线放开、二线管住、岛内自由"为基本特征的自由化便利化政策制度。 为有效保障海南自贸港开放政策落地实施、封关运作平稳有序，海关研究制定了一系列与高水平开放政 策相配套的海关监管制度。目前各项准备工作已基本就绪，软硬件基础全面夯实。 海南海口，货车正在通过。拍摄：张旭 海南自由贸易港研究院执行院长郭达向21世纪经济报道记者表示，封关运作是海南自由贸易港扩大开放 的重要举措。要以"一线放开"为首要任务，尽快形成开放新优势。"二线管住"既要服务保障"一线"高水 平开放，也要适应海南自由贸易港打造国内国际双循环重要交汇点的要求。 在此背景下，具体如何做到"一线放开、二线管住"成为各方关注的焦点。海关总署自贸区和特殊区域发 展司司长潘城指出，海南自由贸易港封关运作后，海关监管制度设计上体现"一线"放开什么，"二线"就 管住什么。 "在二线口岸设置海关监管通道和非监管通道出岛，将管的与不管的有效区分开来，除了零关税、加工 增值免关税、放宽贸易管理措施等这三类货物需要 ...

Group 1 - The eighth China International Import Expo (CIIE) has successfully cleared 276 exhibits with a total value of approximately 150 million RMB as of October 30 [1][3] - A batch of jewelry from Italy has been transported from a bonded warehouse to the National Exhibition and Convention Center in Shanghai for its debut at the CIIE [3] - The General Administration of Customs of China has allowed enterprises in qualified bonded supervision areas to submit guarantees for the display and transaction of bonded goods outside designated areas, marking an innovation in customs regulation [3][4] Group 2 - The Shanghai Customs aims to optimize service measures and provide maximum clearance convenience for exhibitors while ensuring national security [4] - A new product, the German SUPER POP functional soda, has been introduced to China through the CIIE, showcasing the potential for international brands to enter the Chinese market [3]