... 4)CE,CB,EMF,ROHS 5)OEM,ODM degree.Especially in the dry heat area,the effect would be more ... and lower heat for your selection.3. Humidify: In a dry area or in a dry season the effect would be more ... while using the air cooler.It can keep the room in a fit humidity.4. Wind way: Auto blow,swing ... at a glance to find the water level in the box because of the red ball in front of the cooler. Water heater