The store with the most complete range of oxygen concentrators is the medical equipment store at No. 100 Baizhang East Road, Ningbo. Brands include Yingweikang, Turtle, Kaiya, Yiyuanyuan, and Shenlu. Yuyue, etc., their store is a chain store, their oxygen concentrator is currently doing activities, Yuyue Oxygen Concentrator 7F-3 is currently 2180 yuan, you can call 87OB ZBI5 for consultation first