The fireproofing has dust cover, supported with special material.When fire occurs, dust cover will fall off to block all radiator holes, achieve fireproofing effect.

• 耐火桥架配有防尘罩,用特殊材料支撑,当发生火灾时,防尘罩脱落封死护罩上所我散热器孔,达到防火效果;