... steel casing3, Air feed, air cooling by fan, built-in auto dryer4, Plug & play5, Specially design for indoor air purification and ... , components made of stainless steel)3. Use domestic patent productInstall with internal and external air cooled ceramic tube for model of ... can be hanged on the wall or movable with wheel.5. Air feed with auto-dryer, which saves gas feed cost.6. Easy ...