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Fire doors are divided into steel fire doors, steel and wood fire doors, and wood fire doors. It refers to a door that can meet the requirements of fire resistance stability, integrity, and insulation within a certain period of time. Mainly used in stairwells, entrances, pipe shafts, etc., the surface can be single color or patterned. The surface of steel fire doors is made of steel plate, and the interior is filled with perlite door core plates. The size is customized by the customer, and the frame is made of steel plate. The surface of the steel and wooden fireproof door leaf is made of paint free board, filled with perlite door core board, and the frame is made of steel plate. For wooden fireproof door frames
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