O2 CONCENTRATOR

Based on current NASA Technology (takes Pressure Swing Absorption) provides 90% + 3% Oxygen purity levels in accordance with  medical standards.  Has very low electricity  consumption and needs no other  raw material except air. It is noise less  and has oil free compressor.  Very useful in patients with chronic  bronchitis, bronchial asthma , pulmonary heart disease, Cardio-vascular disease, Cerebral thrombosis etc.