A HEPA filter unit with a small fan that can remove gaseous pollutants. Equipped with ultra-high-performance PTFE filter and chemical filter, particulate matter and gaseous matter can be removed. The PTFE filter can collect more than 99.9995% of 0.1μm particles, making it suitable for highly clean environments. Equipped with a boron-free PTFE filter and a chemical filter. Chemical filters can be selected from removal targets such as acidic gas, alkaline gas, basic gas, and organic matter. Stepless control of air volume is possible with a speed controller. You can check the usage time with the time counter. RoHS compliant product.