1.safe and stable, low noise, light weight; 2. to cancel water curtain protection, greatly reduce the project cost

1. more than 4 hours fire resistance, fire back a single point of maximum surface temperature of 86.8 degrees, the average surface temperature of the fire back to 57.3 degrees.2. the wind pressure capable of meeting the requirements of GB14102-93;3. the opening and closing speed of 2-9m / s

Fire shutter doors