- 23
- Jan
EN fire doors hinges,seal for fire doors,fire door accessories
Fire door is the life door in fire, we should pay more attention to it. The normally open fire door should be used for the fire door set in the building where people often pass. The normally open fire door shall be kept open at ordinary times to facilitate the passage of personnel, ventilation and lighting. It can be closed automatically in case of fire to prevent smoke and fire.
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