Go to Hankou Aviation Road in Hanyang District, Wuhan City. There are many medical equipment and oxygen bottles for rent. According to relevant public information inquiries, oxygen cylinders are high-pressure containers used to store and transport oxygen. They are hot-stamped and pressed from alloy structural steel. The outer diameter is 219 mm. Commonly used cylinders have a capacity of 40 liters and are cylindrical. It is an ideal oxygen supply equipment for hospitals, first aid stations, nursing homes, home care, battlefield rescue, personal health care and various hypoxic environments to supplement oxygen.