@Are you still worried about the air quality

The air quality is sometimes good and sometimes bad, making citizens more worried, and if there are pets in the home or just finished renovations, air purifiers come in handy. The air purifier is generally designed as a combination of filtration and sterilization, but how to distinguish the purifier? Don’t worry, let me introduce them to you.The air purifier can be divided into three categories in terms of its working principle. The first type is passive purification (filter type), the second type is active purification (no filter type), and the third type is double purification (active purification + passive purification).The passive purification category mainly refers to the use of fans to draw air into the machine and filter the air through the built-in filter network, which can play the role of filtering dust, odor, toxic gas and killing some bacteria. The filters are: dust collection, formaldehyde removal, deodorization and HEPA. The relatively high cost is the HEPA filter, which can decompose toxic gases and sterilize, especially to inhibit secondary pollution. The characteristic of this kind of product is that the quality of the air fan and filter net determine the purification effect.Active sterilization principle can be divided into silver ion technology, negative ion technology, low temperature plasma technology, photocatalyst technology and net ion group ion technology. Such purifiers generally do not have a screen design and do not remove dust and odors from the air. Represent the brand to have Asia capital, philips and so on.