... .2. Raw material is air, environmentally friendly. 3. The oxygen flow is adjustable, convienent to start and off.4. .Simple ... structure, easy operation, and stable oxygen output.5. High efficiency, low energy consumption.6.Simple to ... Oil free air compressor3. Chiller4. Control: Oxygen flow meter, on/off, Oxygen outlet, Fuse, Power input5. Oxygen purity: 90%±3% Application:Use for ...