... high purity,portable,green,pure,safe. 2.Small,big-capacity,easy to carry,can be used at anytime small size oxygen canStandard ... Pressure: 0.8Mpadiameter:72mmheight:315mmScope of application:Small size oxygen can suits for elderly people, overusing of brain people, high pressure ... using, cover the cover.Structure of the small size oxygen can :Flavor: mint and grapefruit.* OEM is welcome. portable small ...