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In the thin air of high mountains,elderly climbing or walking mountain likely to be short of oxygen near the Hilltop, so they have to suck oxygen.Crutch for elderly is their " the three legs," is also important in their live belongings.Oxygen cylinders will be designed in crutch, when elderly occurs dizziness or emergencies can use.The handle of crutch can immediately uprooted, first ,press the below switch and then press the handle both sides .Oxygen release and let elderly immediately supplemental oxygen.
Ya Fang Lyu