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oxygen concentrator price refrigerated and heated circulating water baths In addition to the basicoxygen concentrator price Description Show Less Features: Adjustable oxy gen conce ntrationSupply continous flow 1 7L min adjustable, 30% 95%,Portable and lightweight: only 5. 2kg, Could work plug in home power supply(AC 220V )for continuous working 24 hours a day if you do not set timer. Intelligent ControlIMD beautiful large color panel, easy to operate, large color LED screen, el ear display, timer operation function and with infrared remote