I don’t know if you’ve ever really looked at the SCBA? Although the device is not common in daily life, it plays an important role in some professional fields. For example, in the fire, chemical, Marine, petroleum, smelting, electric power, warehouse, laboratory, mining and other key fire departments are indispensable air breathing apparatus protection, can also be said to be a necessary device. The SCBA is an ideal personal breathing protection device for firefighters or rescue personnel to carry out fire fighting, rescue and relief work and rescue work safely and effectively under the environment of dense smoke, poisonous gas, steam and hypoxia.