Product Description Generally, the volume is not more than 1000 liters (commonly used for 35~60 liters), for the storage and transportation of permanent gas, liquefied gas, dissolved gas or adsorbed gas bottle type metal or non-metal sealed container called gas cylinder. Aluminum Oxygen Supply System, Portable Shoulder Bag-type Oxygen Supply System, Portable oxygen units, Portable Bag Type Oxygen Supply System/Bag-type Oxygen Cylinder Set, Medical Oxygen Cylinder & Regulator/Medical Oxygen Tank & Regulator/Medical Gas Oxygen Equipments for for medical Oxygen Supply System, oxygen intake devices. (Bag-type)Medical…