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- Jan
en fireproof exterior door,upvc doors fire resistance,commercial fire rated doors
Steel fire doors are made of high-quality steel and filled with fire-resistant materials. The appearance of the latest electrostatic spray treatment is anti-flammable, anti-theft, beautiful and durable. Steel fire doors have a long flame retardant time, prevent the spread of fire, cut off the fire source, and strive for fire rescue time.
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