新华社快讯：封关政策已准备就绪

Core Viewpoint - Hainan Province is fully prepared for the implementation of its closure policy, with all necessary regulations and infrastructure in place [1] Group 1: Policy Readiness - The import tax product catalog, restricted and prohibited lists, and policies for processing and value-added domestic sales with tax exemptions have all been established [1] - Supporting documents related to the closure policy have been finalized [1] Group 2: Infrastructure Completion - Hardware facilities for the closure have passed national acceptance tests [1] - Information systems such as the international trade "single window" and customs smart supervision platform have been successfully built [1] Group 3: Pressure Testing - Ongoing pressure testing exercises are being conducted to enhance the capability to manage the closure effectively [1] - The pressure tests are characterized by a comprehensive approach, covering all processes, elements, and large sample sizes in a practical manner [1]