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1. 5L Oxygen-Concentrator Generator 93% Concentration Household 24 Hours Continuous

   O2 CONCENTRATION：93%±3%. O2 FLOW RATE：0.5-5L/Min (O2 Concentration of 93%±3% Constantly Maintained, Regardless of The Flow Rate, Whether 0.5L/Min or 5L/Min). ALARM (SOUND + INDICATOR LIGHTS)：Power Failure, High&Low Pressure, Low O2 Concentration (≤85%±3%).

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2. 5L/min Adjustable Oxygen-Concentrator-Machine 90%-93% Purity For Household Use

   Comprehensive Alarm System: Alarm for power failure, irregular pressure, and low O2 levels. O2 FLOW RATE：0.5-5L/Min (O2 Concentration of 93%±3% Constantly Maintained, Regardless of The Flow Rate, Whether 0.5L/Min or 5L/Min).

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3. XNUO Y4 6L/Min. Oxygen-Concentrator

   XNUO Y4. Brand new oxygen concentrator. Unused in original box.

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