A mass-produced magnetic glass wiper, from the principle, design, structure, a little bit of optimization and improvement, to get the final product, full of achievement
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https://detail.tmall.com/item.htm?spm=a230r.1.14.62.b72360e0mk1ZoN&id=629533671742&ns=1&abbucket=18&skuId=4673230178828
This design is very clever, feels advanced, simple but not simple.
666
Do you work as a good helper?
Now glass cleaning is so advanced, please link
With this, don't you need city spider-man, ha ha