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The propelling pencil needle core protection movement
发布于:2013-04-19 14:18:31    文字:【】【】【
摘要:The propelling pencil needle core protection movement

The propelling pencil needle core protection movement

The traditional mechanical pencil needle, chuck, copper sleeve, tip cover, springs and other 

multiple parts through the machine into a combination of parts, has become a very important 

part in propelling pencil pencil, make the assembly activities more convenient, greatly 

improving the stability of the propelling pencil products.

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