We, Longfei Group Co, Ltd are one of the well-known oxygen concentrator manufacturers both in China and the world. We enjoys high reputation for our unique quality and prompt service .Longfei is the name of ‘The best quality ’and ‘The best service’ Our main products are Medical Health Care Oxygen Concentrator, PSA Oxygen Generatror. As the only leading enterprise with both oxygen concentrator for home and PSA oxygen genetator for hospital , We running strictly according to ISO9001, most products have CE, TUV, FDA certificates. So we are confident about the quality of our products.