A little idea of whiteboard pen

留言板（11）

不要误会 2021-09-23

Ask for introduction

渡 2021-09-23

So, can you tell me what I think? I haven't understood it yet....

BBBBOB作者 2021-09-23

In fact, it is based on the language of cosmetics, and the bump on the pen body can also be easily grasped to prevent tumbling.

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颜控少女 2021-09-23

In fact, the appearance of the whiteboard pen does not need to be too exquisite, and it is very difficult to clean the main problem (I don't know whether it is the problem of the whiteboard pen or the problem of the whiteboard)

BBBBOB作者 2021-09-23

This is mainly the quality problem of ink. If it is good ink, this problem has already been solved.

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发呆der 2021-09-23

The lid is easy to lose, and the ink will disappear when it is put on.

BBBBOB作者 2021-09-23

In fact, high-quality ink has already solved this problem.

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润喉糖 2021-09-23

There are many bugs in whiteboard pens. I said the current ones

BBBBOB作者 2021-09-23

Indeed, I feel that there are still many ideas when brainstorming, and there will be more ideas in the later period.

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木肆。 2021-09-23

Bright mark level 7 achievement?

BBBBOB作者 2021-09-23

Old Aso

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BBBBOB

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