Positive posture eye protection pen

留言板（7）

用心. 2019-03-11

How to define the wrong limb of a pen, is it a unified grip?? Everyone has his own way of holding a pen, right

W先森作者 2019-03-11

Gripping posture is on the one hand, taking the "relative" standard pen holding position, and detecting the distance between the chest and the table edge, eyes and the table top. the positive posture also protects the eyes

用心. 2019-03-12

我也说一句

Prince小七 2019-03-08

It's pretty good

旁白 2019-03-08

The first picture didn't show up.

兔夫人 2019-03-08

This product is forced out with children

W先森作者 2019-03-09

Children with bad temper and wrong sitting posture may throw away their pens in a fit of pique, haha

我也说一句

W先森

Digital Intelligence

版权声明

本作品版权归 W先森所有，禁止匿名转载及个人使用，任何商业用途均需联系原作者。