- 31
- Aug
fire staircase door,fire exit alarm,emergency fire exit door
According to the architectural design specification, the fire elevator door must be set up in the front room, and a window must be opened at the same time to be able to exhaust smoke and meet the needs of fire protection. According to the requirements of the national standard, in addition to the functions of ordinary doors, elevator fire doors also play a vital role in preventing floor fires from spreading through elevator shafts.
https://ztfiredoor.com/18484.html
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