We are one of the biggst oxygen gernator factory in China, We promise NO.1 quallity, original package,big discount . you can buy 1 sample , also 40ft container business. OXYGEN 90% GENERATOR/CONCENTRATOR OXYGEN ADJUSTABLE REMOTECONTROL LCD 0L-5LBRAND NEW OXYGEN GENERATOR/CONCENTRATOR OXYGEN ADJUSTABLEOxygen concentration is adjustable from 30% to 90%Oxygen output is adjustable from 0L to 5LHigh Density Oxygen, Low Noise, High SecurityLED Timing light, Intelligent chip control, Far infrared remote control2 YEAR WARRANTYNotes: We have 110V/220V-230V-240V in Store, pls leave a message after your order placed.1 shipping fee is very low. 2 supply competetive price with 1:1 quality 3 unit price: 298/pcs moq: 1 carton. 4) delivery time :5-8 businessdays with ems. 5) payment: w/u, t/t and * gram. Rosechen001 at hotmail com , Skyp: rosechenrosechen you can also add me M-S-N.