Pure oxygen
The oxygen output concentration of the oxygen generator is less than 90%, so it can be ignored. Pure oxygen is our first choice.
Small noise
Household appliances will be noisy to a certain extent, and oxygen generators can't avoid it. In order not to affect the rest of others and ourselves, we should choose a relatively low noise within our acceptable range, preferably below 45 decibels. The compressor of oxygen generator should not be ignored, and the quality of parts should be selected.
Cumulative timing function
Choose an oxygen generator with cumulative timing function, so as to reflect its value in future maintenance.
Brand guarantee
Choose a brand of oxygen generator, its own strength, after-sales service to home, quality assurance, in order to buy rest assured, comfortable to use.
Price–performance ratio
Not buying is the most expensive, but seeking the best.