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bs commercial metal door and frame,commercial steel doors,commercial steel doors 36 x 83
In fact, fire doors often appear around us, not only public places, but also residential buildings are equipped with fire doors, because it is an essential safety facility in public fire protection. The door frame, door leaf frame and door leaf panel of the steel fire door are all made of high-quality cold-rolled steel, which is not only not easy to deform, but also has explosion-proof ability.
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