The fire door has the function of isolating fire source to ensure our safety. From the material point of view, the filler used in the door plays a great role in the fire protection function, and the glass magnesium fire-proof board is almost used as the fire-proof material. In case of fire, the fire door with temperature reaching a certain standard will not burn and will not produce flame, and has the characteristics of moisture resistance, sound insulation, durability, etc.