
| Sterilization methods | Functional segment length |
| Electronic purification | 3M |
| activated carbon | Plate type 1M, carbon box type 4MM |
| UV Germicidal lamp | 0M, does not occupy segment length |
| Photocatalysis | 3M |
| Ozone generator | 0M, placed in the air outlet section |
| Traditional Plate Bag Filter | 1M, 5M |