The sealing property is far more than the paper border with using the plastic margin. The Filter with composite fiber, sprayed with activated carbon powder, can filter dust particle efficiently and the wind resistance is very small. The even-distributed activated carbon powder can maximize the role of activated carbon. This washable filter can be used repeatedly, and two in one way, early effect+activated carbon, greatly reduces the total cost of consumables. 

The sealing property is far more than the paper border with using the plastic margin. To ensure the health and non-pollution, we take the environmental friendly imported sealant, no color and no odor. The filter element that we use is 3M HEPA, meeting the European standard- H13, and the PM2.5 removal rate can be up to 99.97%, this large dust holding capacity helps to save the total cost.