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, then it can send out the air after sterilization. 

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

 3. Liquid sterilization 
 For drinking water, drink water, the system of ice water, cool drink of water removal. 
 4. Other 
 For clothing, bedding, food, medical equipment, food packaging materials, and so do the surface sterilization.