ACT25W is used in the positive and negative ion generator. The positive ions and negative ions produced by the positive ions and negative ions release the huge energy at the moment of positive and negative charges in the air, which can lead to the change of the structure of the bacteria and the transfer of the energy around it, which leads to the death of bacteria and the effect of sterilization. It also can efficiently decompose formaldehyde and benzene and ammonia and other TVOC and other volatile organic compounds, so as to eliminate peculiar smell. It is mainly used for large and small new air blower.