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菱镁防火门芯板
Magnesite core board for fire resistant doorset
价格:¥0.00
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塑料管道阻火圈
Firstop collar for plastic pipes
价格:¥0.00
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挡烟垂壁
Smoke curtains
价格:¥0.00
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建筑构件用防火保护材料通用要求
General requirements for fire protection materials of structural elements
价格:¥0.00
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消防产品类强制性认证实施规则 建筑耐火构件
价格:¥0.00
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排油烟气防火止回阀
Vapor exhaust & fire resisting check damper
价格:¥16.00
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