... industry, ships and vessel, petroleum, smelting and mine industries.The air breathing apparatus in this series is equipped with a complete ... face mask that is transparent and has good air tightness and gives you a wide field of vision.The ... dense smoke, poisonous gas,steam ,or lack of oxygen.Approval :CCS,EC,RS Air Cylinder Volume 6L9L 12L Air strorage capacity 1800L 2700L ...