Air Fresher/Air Cleaner 1.pre-filter 2.Electrostatic precipitator 3.uv-led photo catalyst 4.ozone sterilization and filter Air fresher/Air Cleaner Yitianneng intelligent air fresher can get rid of formaldehyde, benzene, ammonia, smoke, smell, dust, germs, diseases, pollen and mites in the air and release negative oxide ion and purify the air to improve the functions of lung and heart, sleeping, ...