ObjectiveDuring the spreading of respiratory epidemic,to change all-air central air conditioning system in order to clean dust and steri lize air,and to reduce the second pollution and cut off the way of spreading vir us.

• 目的 在呼吸性传染病高发时期 ,改造全空气中央空调系统 ,实现净化、消毒功能 ,减少二次污染 ,以切断病毒的传播途径。