Source:|Author:id1703072|Published time: 3302 days ago|3439 Views|🔊 Click to read aloud❚❚▶|Share:
Many houses have sun-roof,some have windows of roof.They are not easy to clean.If you climb so high,it's dangerous.You can put the robot on them,remote control it or let it work automatically.It's very small and light,very safety to stay on the roof windows and clean them well.
