... shift, adopt advanced physical theory (PSA) to separate oxygen and nitrogen in air, at the same time filter ... bad substance in air, so as to get pure oxygen for medical use, home care, and beauty.Technical ... 60dB (A)7. Maximum nebulizing rate (apply in the oxygen concentrators having the function of nebulizing): ≥0.2 mL/ ... 62bs) (7F-8) 32.5kg (71.65bs) (7F-10)11. Dimension: H44.5cm (17.5″) ×W37.2cm (14.7 ...