Mixture Gas, Gas Cylinder manufacturer / supplier in China, offering ISO Standard Steel Cylinder 40L 47L 50L Tped Certificate 150bar 5.7mm Oxygen Gas Cylinder, ISO /DOT 8L~50L Gas Cylinder Seamless Gas Cylinder Oxygen Argon Cylinder, ISO Tped DOT Certified High Pressure 10L 20L 40L 47L 50L 200 Bar Industrial Gas Cylinder and so on.