Industrial Gas Cylinder, Beverage CO2 Cylinder, CO2 Fire Extinguisher manufacturer / supplier in China, offering Medical Grade Oxygen Cylinder Isocertified for Hospitals and Clinics - Various Sizes Available, Bulk Supply DOT/ISO Certified Seamless Steel Oxygen Tanks - Factory Direct Price, Portable Oxygen Cylinder Rack Lightweight Aluminum Alloy Frame, Suitable for Transporting Medical/Diving/Fire-Fighting Oxygen Cylinders and so on.