Crystal actually being good air purifier HJR-8021, net purification enjoy a deep breath: 2 4 heavy layer filter layer filters purify 2: activated carbon filter + HEPA filter UV purification heavy ions 4: Activated carbon is mainly dominated by carbon-containing as raw materials, high temperature carbonization and activation sorbent prepared. Contains a lot of microporous activated carbon with a large surface area, high adsorption of volatile organic compounds, secondhand smoke, dust particles; can filter pollen, dust mites, mold, PM2.5 and other filtration rate of 99%. Is the best filter material remove particulate contaminants; via the built-in UV lamp, kill all microorganisms, bacteria, flu viruses, dust mites, etc., with the use of photocatalyst; aeroanion one can adjust the positive and negative ion concentration ratio, on the other hand can also play a role in purifying the air and negative ions in the air to make invisible micron dust floating through the positive and negative ions attract, forming molecules collide sinking floor, and two of negative ions to make bacterial protein reversed, leaving the bacterial viability decline or death. Rated voltage: 22V 50HZ Rated power: 45W fan: plastic fan CADR values: 175m3 / h Application area: 15m2 Winds: Low | Medium | High Material: ABS Size: 510 * 290 * 160mm sound noise: 51db Weight: 3.5kg Multiple filtration systems, net enjoy a deep breath 1, HEPA filters: high-grade fine filter, capturing the air diameter greater than 0.3um particles, the filtering effect of up to 99%, so that a thorough history PM2.5 2, activated carbon filter: adsorption air formaldehyde, aniline, deodorant to taste, and the larger particles in the air filter 3, the release of high concentrations of negative ions: the release of 3 million high concentration of negative ions, keep the air fresh and precipitation particles in the air, so that the air is more refreshing and more clean