... conversion 5)2 indenpentent patent Performance1.It can purify smoke and all kinds of peculiar smell, formaldehyde, toluene ... minutes more2.The dynamic display of temperature, humidity, negative ion, plasma, battery capacity, a fan and a battery ... crystal display3. Quintuple purification: HEPA filters, activated carbon, negative ion, photocatalyst, plasma 1) super-activated carbon filter HEPA air ...