Main purposes: 

 1. Air sterilization 

 To prevent germs in schools, hospitals, theaters and other plants of the flow of people is more spread through the air. Also, if used in the ventilation tube to the air after sterilization can be transmitted. 

 2. Food antivirus 
 Anti-virus for the food surface to prevent bacterial contamination of food outside. 

 3. Liquid sterilization 
 For drinking water, drinking water, made ice, soft drinks, water, sewage and other water sterilization, anti-virus. 

 4. Other 
 For clothing, bedding, food, medical equipment, food packaging materials, and so do the surface sterilization.