90+-3% oxygen generator/oxygen machine/oxygen concentrator 1,2/12 tower aluminum/zeolite material 2,3-70LPM oxygen capacity 90+-3% oxygen generator/oxygen machine/oxygen concentratorConfiguration of oxygen producing conentrator 1. Built-in oil free compressor inside2. Condensator3. PSA oxygen generator unit4. Control: Door lock, scram button, Ampmeter, Working indicator, On/Off, Power indicator, ...