日本消防厂商新近推出一项新产品,轻量空气呼吸器,是为消防队员在扑救火灾时提供新鲜空气的.它同旧式的呼吸器主要有两个区别,一是它充装的不是氧气而是新鲜空气,日本人认为在火场上使用空气呼吸器比较安全.二是它的外壳不是用钢材焊接而成的,而是用强化塑料制造的.其重量较旧式气瓶的重量轻25%. Japanese firefighters recently introduced a new product, lightweight air respirator, for firefighters in the fight to provide fresh air when the fire.It has two main differences with the old style of respirator, first, it is not filled with oxygen and Is fresh air, the Japanese believe that the use of air respirators on the fire more secure.Second, it’s shell is not made of steel welded, but made of reinforced plastic.Its weight is 25% lighter than the old cylinder.