How high does it take to get oxygen?

Geographically, any area above 500 meters above sea level is called plateau. According to the altitude, it is generally divided into five situations: low altitude, medium altitude, high altitude, ultra-high altitude and extremely high altitude. Different altitudes will cause different degrees of physiological response to human body, such as low altitude (500- 1500m), and there is basically no physiological change; At medium altitude (1500-2500m), there will be a few symptoms of hypoxia. At high altitude (2500-4000m), altitude sickness often comes, and the symptoms will get more serious as you go up. At this time, we must take oxygen in time to improve the oxygen saturation and maintain the normal operation of the body. Portable oxygen supply equipment can be prepared in advance, such as Mei Ying portable oxygen generator, which is light and portable, with built-in battery, and can absorb oxygen in time in any environment.