... 220V/5A 50Hz; 2. Rated Power: 45W; 3. Output of negative ion: 100, 000, 000/cm3; 4. Purifying rate: 99.97% ... 220V/5A 50Hz; 2. Rated Power: 45W; 3. Output of negative ion: 100, 000, 000/cm3; 4. Purifying rate: 99.97%; ... and enlarge The covering surface of negative ion. 8. With multiple filter layers include: UV, Polybasic photocatalyst, negative ion, photocatalyst, Active carbon, HEPA filter layer ...