The occurrence of fire is the most common, the most prominent and the most harmful disaster in real life, and it is a major issue directly related to the safety of people's lives and property. Therefore, fire safety is very important in daily production and life. In high-rise buildings and public places with a large flow of people, fire doors are also an indispensable part of fire safety management. The application of fire doors ensures our life safety. The installation of fire doors that meet fire standards has become a mandatory requirement for fire acceptance. What are Fire Doors?Fire doors refer to doors that can meet the requirements of fire resistance stability, integrity and thermal insulation within a certain period of time. In addition to the function of ordinary doors, fire doors also have the function of preventing the spread of fire and the spread of smoke. It can prevent the spread of fire within a certain period of time, ensure the evacuation of personnel to buy time for escape and fire fighting, and use it with fire exits to minimize fire losses. The approved laboratory designated by the Ministry of Fire and Economic Affairs, according to the national/international standards for fire doors, the fire door fire resistance test method, and obtained the verification registration certificate and authorized logo issued by the Standard Inspection Bureau of the Ministry of Economic Affairs, is called a fire door. What is the function of a fire door?The no