Crystal actually being good air purifier HJR-8020, without care, auto purification purification: 5 heavy weight purification filter 6 5 weight filters: pre-filter, high efficiency HEPA filters, cold catalyst filter, the filter catalyst, Activated carbon filters purify heavy 6: pre-filter 20 micron filter pollutants, such as: hair, dander, fiber and other large particles of pollutants; HEPA filter can effectively filter pollen, dust mites, mold, PM2.5, etc. filtration rate of more than 99%; activated carbon filter containing activated carbon is mainly composed of carbon-based materials 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; under the action of light, have a strong catalytic degradation function: it can effectively degrade toxic gases in the air; photocatalyst filter can effectively kill a variety of bacteria, and the bacteria or fungi can release a toxin and sound processing. Rated power: 30W Rated voltage: 220V 50HZ CADR values: 300M3 / h Application area: 30M2 Weight: 6.4kg Noise: <46db Product Size: 640 * 355 * 185mm Features: Living room - reducing pollution, with comfort, absorption of harmful substances Office - fresh air, do to improve the overall efficiency and eliminate smoke odors bedroom - improve sleep, improve sleep quality, reduce static electricity and electromagnetic study - clean air, enjoy reading, inhibit bacterial growth