Want to buy a simple and convenient oxygen concentrator for the elderly at home, where to buy in Yanqing assured? Which one is better?

Oxygen concentrator is a medical device, not a health and fashion equipment, so the size of the preferences and the appearance of whether the good-looking will vary from person to person, but taking into account the sub-patient's oxygen intake time is longer, the need for a long period of time continuously on the machine, we must choose the oxygen concentrator (oxygen machine) of a moderate size, the internal structure of the machine optimized for the ideal space for heat dissipation. Only by comprehensively improving the heat dissipation performance can we ensure stable oxygen concentration. Look at your specific need to absorb oxygen time, choose the model suitable for their own, in Yanqing County Hospital opposite (Dongjiang Hotel to the south) of the medical equipment store there.