What kind of oxygen concentrator is better for general buyer?

Kehua Health Science and Technology (Shandong) Limited

Kehua KH type medical oxygen concentrator (suitable for hospital medical station oxygen therapy, home gym and other places oxygen health care)

Flow rate: 3 liters to 7 liters

Oxygen concentration: are 94% (national medical standards for more than 90%)

Power: 370W

Model and price: (economic domestic molecular sieve) (standard) (timed) (automatic) (advanced) (standard atomization) (timed atomization) (remote control timed atomization) and (Kehua car oxygen concentrator) (Kehua split oxygen concentrator one tow four) and other 18 models, the price is set according to the flow rate and different functions (3000 ~ 6000, 10000 ~ 20000RMB)

Using PSA variable pressure adsorption technology, France imported molecular sieve, selected domestic and foreign advanced accessories, no additives, turn on the power supply out of oxygen, advanced gas circuit automation control system 30 meters remote control timing function (domestic leading), low noise, safe and convenient to use for 20 years of lifelong maintenance, completely replace the oxygen cylinder.

Description: Oxygen generator must obtain the People's Republic of China **** and the country's medical equipment registration certificate can be produced according to national medical standards!

Give everyone a reference, I hope that buyers choose carefully, the price, always reasonable!

PS: Oxygen Power, Sea Oxygen House have no such certificate and the flow of small oxygen concentration is not enough, not medical standards, and is not suitable for therapeutic use. The new pine concentration drop fast, a year will have to replace a molecular sieve