成都/四川-防火窗厂家/价格/批发-成都市恒置源科技有限公司

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成都/四川-防火窗厂家/价格/批发-成都市恒置源科技有限公司

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防火窗是指在一定时间内，连同框架能满足耐火稳定性和耐火完整性要求的窗。在防火间距不足的两建筑物外墙上，或在被防火墙分隔的空间之间，需要采光和通风时，应当采用防火窗。

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