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1. Home oxygen concentrator, suitable for all kinds of people.
2. supply continuous flow 1-7L/min adjustable.
3. 1L 90%; 2L 65%; 3L 55%; 4L50%;5L 40%; 6L 35%;7L 30%
4. Two people can simultaneously absorb oxygen.
5. Intelligent time accumulation function
6. Small size for easy to ship and carry.