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Why are there two options for the stitch deformation grooves on some stapler chassis?
Aug 15, 2018

1. The inside of the book is bent, and the normal binding is used. For example, the book is ordered, the information is ordered, etc., and the removal is performed by using a tool such as a nail remover, which is also called a long-term order, and needs to be removed by using a nail remover or the like.

2. External bending, temporary binding, instead of pins/pins, easy to remove, also called temporary, easy to remove

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