The people in the pharmacy told me that there is an air cushion on the bed to prevent bedsores. Where can I buy Yantai? Is there any after-sales guarantee? After all, this is a big piece.

Are you talking about the whole bed of air mattress? This kind of thing has all the prices. Generally, the quality is about two or three hundred, and it will be scrapped in a few months. You'd better buy a bedsore pad that can be alternately turned over and inflated. The surface of the pad has micropores and air jets. But this kind usually costs about six or seven hundred. 1000 or so, there is something of better quality. Yantai has a monopoly on this kind of thing, which is a monopoly of home medical equipment. The address is in the northernmost part of Yantai Chinese Medicine Hospital. East side of Happiness Road. Deer and Irma are very good.