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Mar 20, 2022

8：Final select before packing 

The selection can only be carried out after the site inspector seals the qualification seal,

First of all, by manual selection of zinc deposits, thread scratches and other undesirable,

After,diameter, no thread, oblique thread and other defects were confirmed by optical screening machine. 

If you are interested in our products, please tell us which materials, type, width, length you want.

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