Nilefen Oxygen Bar Machines 1L/min-5L/min Portable Oxygen Concentrator Air Purifier Oxygen Making Machine Oxygen Purifier Concentrator Full Intelligent Home Oxygen Concentrator Generator

Features: 1. Concentrations up to 90%, the flow can be adjusted from 1L to 5L. 2. Excellent filtering performance. 3. Intelligent control is convenient to use. 4. Mute design more comfortable,less than 45 db. 5. Add Shockproof mat more secure. 6. Bacteria filter oxygen more safe. 7. Remote control operation more convenient. 8. Oxygen stable. 9. Small volume, convenient to carry. 10. Timing func...