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一种带有紧固螺纹的半空心自冲铆接螺钉及自冲铆设备和方法
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First Author:Liang Ying
Disigner of the Invention:代景超,daiminghua,huping,hanxiaoqiang
Application Number:CN201810348196.1
Authorization Date:2018-04-18
Authorization number:CN108457954A
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