- 12
- 6月
EN commercial sectional steel doors,steel security doors for business,commercial double metal doors
Fire doors can be divided into steel quality fire doors, wood fire doors, glass fire doors, steel wood fire doors, etc. Fire doors are one of the measures for fire separation of buildings. They are usually used on fire walls, entrances and exits of stairwells or openings of pipe wells, and are required to be able to isolate smoke and fire.
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