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fire rated rolling door

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  • Classification of fireproof rolling shutter door
    Classification of fireproof rolling shutter door
    The fireproof rolling door is divided into two series: composite smoke proof type and common type, and there are five types of curtain board sections to choose from. The material is made of high quality cold-rolled hot galvanized fireproof special strip steel, the belly is filled with hanging alumin
    2023-05-05
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