In order to care for the hard gardener and the lovely flowers of the motherland, the chalk ash removal blackboard eraser is designed.
Chalk ash removal blackboard eraser design
Chalk ash removal blackboard eraser design
Chalk ash removal blackboard eraser design
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Which step is the landlord now? I also have this intention.
Very good... it's just that the whiteboard has been replaced now...
When I was in high school at the beginning of the year, I really needed it, but now many schools are starting to use whiteboard pens for classes ~ ~ I feel that the era of chalk is gone forever ~ ~
What material is the side that contacts the blackboard?
Yes, I always wanted to do this when I was in school.
Sick, duck
Come on
I have long wanted to design one. This pain point is very painful and my execution is slow. The idea was done.
Oh, senior feels that you are going to win the prize.
Small vacuum cleaner.
Is it vacuuming directly?
See you for the first time.
What is the principle?