Why is there a water stain on the floor after using the Xiaomi Truclean W20 Wet Dry Vacuum?

The vacuum roller brushes perform wet mopping on the floor, and different floors have a certain degree of water absorption. Therefore, after mopping, a thin layer of water film will be formed, which is more obvious under sunlight, but it will quickly dry out and does not affect the cleaning effect. You can use a bow shaped mop or choose a low-end mode for cleaning, which can effectively reduce the residue of water stains.