We are the manufacturer, our factory is located in Anhui, China, welcome to our factory. We produce 4 kinds Oxygen concentrators, 1L, 3L with monitoring oxygen concentration, 3L no monitoring system of oxygen concentration, 5L with monitoring system of oxygen concentration. Besides, 3L and 5L can add atomization function.
1.Flow rate: 1-5L/min adjustable          
2.the Max amount of oxygen: 1L/min≥90%
3.Operating pressure: 58.6±6Kpa       
4.Voltage frequency: 220v/50hz           
5.Oxygen concentrator: 93%±3%

Specification	XS-100	XS-300J	XS-300Y	XS-500
Flow rate	1-5L/min adjustable	0.5-5L/min adjustable	0.5-5L/min adjustable	0.5-5L/min adjustable
the Max amount of oxygen	1L/min≥90%	3L/min≥90%	3L/min≥90%	5L/min≥90%
Operating pressure	58.6±6Kpa	58.6±6Kpa	58.6±6Kpa	58.6±6Kpa
Voltage frequency	220v/50hz	220v/50hz	220v/50hz	220v/50hz
Oxygen concentrator	93%±3%	When flow rate less than equal 3L, oxygen concentrator greater than or equal 90%	When flow rate less than equal 3L, oxygen concentrator greater than or equal 90%	≥90%
Power(W)	90w	195w	195w	300w
Weight	5.4kg	7.6kg	7.6kg	16.5kg
Noise	≤43decibel	≤45decibel	≤45decibel	≤40decibel
Size	265L*195W*387H	367L*208W*345H	367L*208W*345H	373L*322W*605H
Package size	295L*230W*420H	400L*260W*370H	400L*260W*370H	410L*360W*605H