Fire doors refer to doors that can meet the requirements of fire stability, integrity and heat insulation within a certain period of time. It is a fire partition with a certain degree of fire resistance, such as fire compartments, evacuation stairwells, and vertical shafts. In addition to the function of ordinary doors, fire doors also have the function of preventing the spread of fire and smoke, which can prevent the spread of fire within a certain period of time and ensure the evacuation of people. Classified by material: there are wooden fire doors, steel fire doors, steel-wood fire doors, other fire doors, etc. The company mainly produces single and double-leaf steel heat insulation fire doors. The fire performance has been approved by the Fire Products Conformity Assessment Center of the Emergency Management Department It is recognized that the fire performance has reached Class A, and the use of the 3C certification mark is permitted. The products are widely used in the evacuation passages of various urban public buildings!