What are the indicators for choosing an oxygen concentrator?2024-05-31The longer the life of the machine, the lower the cost per month of use which is actually equivalent to saving money, especially for patients who need oxygen for along time.Cost estimation method: purchase amount / machine running time =cost per hour of use.Some machines are cheap, but the life expectancy is short, in addition to the purchase cost of the replacement machine, more costly to the buyer to deal with the cost of after-sales time.Good machine 1 set top 2 sets of poor oxygen machine.