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Free stickers / Sticking hook

Free stickers

The outer ring of the hook can rotate along the center, which will not cause damage to hook , because if the hook is not the vertical downward to attached to the wall ,it will cause uneven force .We don't have to pay attention to stick hook vertically as far as possible, even if we stick on the wall at random, it will automatically turn to the direction of hanging objects. Even if touching the object,the shaking object still can ensure that the direction is stress direction . It is interesting and brings great convenience to us.

University

Changchun university of technology

Changchun university of technology
changchun, China

shiquan wang,
Changchun university of technology

man li,
Changchun university of technology

yuting shen,
ShiJiaZhuang TieDao University