... industry, ships and vessel, petroleum, smelting and mine industries.The air breathing apparatus in this series is equipped with a complete ... you a wide field of vision.The air supply device is equipped with a new type air supply valve that is small , light ... ,or lack of oxygen.Approval :CCS,EC,RS Air Cylinder Volume 6L9L 12L Air strorage capacity 1800L 2700L 3600LWorking Pressure 300Bar 300Bar ...