Oxygen cylinder (steel) (major specifications: 2L, 3.2L, 4L) Adopting unique design of combination of pressure-reducing valve and safety valve. Compact in structure, fancy and safe, equipped with flow regulator, stable output pressure. Adopting empty-inside packing (we have acquired the patent for this packing) unique doubleway design (needn’t open the lower valve when breathing oxygen, relieves user’s fear for the pressure containers). Strong, tough, collision protection. It is easy to carry and move for its mini-size and lightweight.
