1, should choose the output of oxygen concentration greater than 90%, and 24 hours of uninterrupted work state of oxygen concentration can still maintain the standard of medical-grade small oxygen concentrator.

2, to choose a strong, long-term sustainable development, in the local perfect after-sales service oxygen machine manufacturers, to ensure that the long-term after-sales service after the purchase of the machine.

3, To choose the oxygen machine with low noise, the noise level is better than 45 decibels, otherwise, it may affect the rest of myself and others, especially at night.

5, considering the long use time, it is recommended to choose the machine with moderate body shape, optimized internal structure and ideal heat dissipation space. Only by improving the overall heat dissipation performance, can we ensure stable oxygen concentration.

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