What's the price of domestic oxygen generator?

As far as the price of oxygen generator on the market is concerned, it ranges from more than 1000 cheaper to 7800 more expensive. Generally speaking, it depends on different demands. If there are elderly people with respiratory diseases or cardiovascular and cerebrovascular diseases at home, a 3-liter oxygen generator should be prepared. I bought Omron myself, about 3,000 yuan, and it is also one of the few oxygen generators with medical device certification. Deliver it to your home when you buy it, and guide the installation.