YUWELL 8F-5AW OXYGEN CONCENTRATOR FOR SALE Almost Brand New Condition! Selling a Yuwell 8F-5AW Oxygen Concentrator, used for only 1 month and maintained in brand-new condition. ✅ Only 1 month used ✅ Excellent, like-new condition ✅ Original purchase bill available ✅ Ideal for home oxygen therapy, as prescribed by a healthcare professional Selling at a reasonable price.