Product Description Aluminum alloy medical oxygen cylinder has the characteristics of light weight and high inner surface cleanliness. The bottle body is made of high strength 6061 aluminum alloy, which has good durability, fracture toughness and corrosion resistance. We can supply the portable oxygen cylinder made of aluminium material with trolley as package, which will bring great convenience for you and shall be fit for medical, healthcare and family usage. Also all of our portable oxygen cylinders are all passed ISO 13485 inspection system. Small and portable oxygen device which are fit for first-aid and health-care of hypertension and heart disease etc. *It is e…