Oxygen Concentrator Beauty equipment-LD-OX2 Shell: ABS Original Location: China Certificate: CE, ISO13485 Flow ... Rate: 1-5L Oxygen Concentrator Beauty equipment-LD-OX2SpecificationsOxygen Concentrator, type V5N product is high cost performance which ... China.Long time continue working, up to 3,000 hours a time.Ariable current control technology is energy-saving 20%.