Fire Extinguisher, Fire Fighting Equipments manufacturer / supplier in China, offering DOT-3AA Seamless Steel Gas Cylinders 3.6L to 88.4L Medical Gas Storage Cylinder, ISO9809-3 High Pressure Gas Cylinders 37mn Seamless Steel 2L to 68L, ODM High Pressure Gas Cylinder Safety 34crm04 Steel Cylinders GB/T 5099 and so on.