... .apply zeolite molecular sieve as shift 3.get pure oxygen for medical use, home care, beauty apply zeolite ... shift, adopt advanced physical theory(PSA) to separate oxygen and nitrogen in air, at the same time filter ... medical use, home care, beauty7F-3 technical data:Oxygen density: ≥90%Oxygen flux: 1~3L/minOutput pressure: 0.04~0 ... A)Power supply: AC220±20V,50±1HZInput power: ≤350VA Oxygen concentrator