地震预警-倒计时警报

Based on information from the China Earthquake Early Warning Network, this Chrome extension delivers early warnings seconds to tens of seconds before shaking. It supports configurable alert thresholds, shows epicenter, estimated magnitude, and anticipated intensity, and time of the warning; users can upload on-site emergency information and access warning education and historical records.

VIP membership and donation options are described, including Basic and VIP plans with annual pricing, auto-renew via Apple iTunes, and refund terms. User agreements and privacy policy are provided at https://video.chinaeew.cn:8203 and https://video.chinaeew.cn:8204. The extension supports ongoing disaster warning research and multi-hazard alerts.