防火门是建筑物上重要的防火措施之一 ,通常用在疏散通道、楼梯间出入口及防火墙等部位。近年来火灾频发 ,尤其是一些人员密集场所 ,因为疏散通道或安全出入口防火门出现问题 ,而引起的群死群伤更是引起了相关部门的高度重视。今年 4月公安部、国家安全生产监督管理局专门下发? Fire doors are one of the most important fire precautions in buildings and are commonly used in evacuation routes, stairwell access and firewalls. In recent years, frequent fires, especially in some densely populated places, have caused great clashes and injuries caused by the relevant departments due to problems with fire escape doors in evacuation passage or safety entrances and exits. April this year, the Ministry of Public Security, the State Administration of Work Safety issued specifically?