The steel fireproof door is made of high-quality cold-rolled steel plate or galvanized plate, color plate, stainless steel plate, etc., and is formed by cold processing (shearing, punching, bending, etc.). The steel fireproof door frame shall be embedded with special fireproof expansion sealant strips, and the hardware shall be professional fireproof locks, fireproof door closers, fireproof hinges, handles, latches and sequencers.

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