Many people will ask: Is the central air-conditioning air purification device filter the more layers, the better? The answer is no. The filter of the central air-conditioning air purifier does not look at the number of layers, but rather the filtering technology. The more the filter layer of the central air-conditioning air purifier is, the better the filtering effect is. The concept is not correct. The people who propose this concept are generally customers of the air purifier industry. In order to highlight the advantages of their products, in the advertisements List several types, several layers each have a different role of the filter, and some even superimposed to 8 layers. The more layers, the better, purely slogan. In fact, there is only one type of central air-conditioning air purifier filter on the market, that is, Weiyi plasma high-voltage electrostatic precipitator, which filters dust in the air, particles above PM10, large particles such as hair; In the case of fumes, formaldehyde, odor, bacteria, TVOC and other toxic and harmful substances; filter screen in the air PM2.5 and below or other particulate matter, bacteria, bacteria and other inhalable lungs. The quality of the central air-conditioning air purifier filter is mainly determined by the level of the filter. The higher the level, the higher the purification rate. The medical grade clean-up dust collector medical grade purification is generally used in sterile operating room or aviation. The aerospace industry can purify more than 99.9% of PM2.5, 99% of bacterial viruses and 97% of formaldehyde in the air. The quality of the central air-conditioning air purifier filter is not determined by the number of layers. The superposition of the filter screen can not bring clean air than the plasma electrostatic precipitator, which is pure waste. Solar Pump Inverter,Solar Pump Control Inverter,Frequency Inverter For Solar Pump,Single Phase Solar Pump Inverter Zhejiang Kaimin Electric Co., Ltd. , https://www.ckmineinverter.com