When the fire occurs, it can effectively prevent fireworks from the residential or commercial area to the fire evacuation channel, that is, play the role of blocking fireworks. More simple, the fire door is open toward the fire escape, and with the door device and other automatic reply function, people from the residential or commercial area can easily run to the fire escape, and the door will automatically close, prevent fireworks into, for the escape personnel to win more opportunities to survive.

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