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北京11选5
钢质防火窗优于普通的防火窗产品
发布者:管理员   发布时间:2018-8-14 9:29:23 浏览次数:

  钢质防火窗优于普通的防火窗产品。防火窗是一种由防火玻璃和窗框组成的,当发生火灾时可在一定范围内起到隔离温度和阻止火势蔓延的窗户。

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