Thermal insulation function:
The places where customers often go in and out do not need to constantly open and close the door after using the air curtain such as restaurant, shopping mall and entertainment. So the indoor cold and warm air temperature can be maintained at an efficiency of 60-80%, only minor temperature change.
Insect prevention：
Most of the insects can not pass the air wall, then it is easy to keep the healthy enviroment of fruit counters, fast food restaurants and etc.
Dust prevention:
In precision machinery factory, the food store or clothing shop on the oppsite of the bus lane, it can effectively shield the outside
Sterilization function:
UV light can install on the air curtain, then it can kill the bacteria and viruses in the air.
