KSN series of Medical oxygen concentrator is made up of filter system, compressor, adsorb tower, electrical control system, humidifier system and the reasonable air course from case structure. It adopts the current world’s advanced transformation absorption (PSA) principle. It separates the oxygen and nitrogen under common temperature and pressure, then obtain the medical oxygen which consists with the Medical standards. Pure physical manner of making oxygen, without any additives, no disposals, pollution-free, fresh and natural.