A fire in a commercial and residential building was fully put out a few hours after it broke out in the South Korean city of ...

GB21976.7-2012《建筑火灾逃生避难器材_第7部分_过滤式消防自救呼吸器》5.5.1 一氧化碳防护性能。 线性误差： ≤±2%F.S 重复性误差： ≤±2%F.S 呼吸流量可调范围：2L/min~60L/min ...