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#1 30-04-2018 16:15:50

christ
Membre
Date d'inscription: 02-03-2016
Messages: 49

when the visual inspection is done

The testing is carried out on the universal material test machine or the tension test machine, and the bonding strength is not less than 20N/cm. https://www.leatherapronuk.com/

Four, heel
When the shoes are fixed, they will be clamped together and pulled by pulling machines to see how much pulling force they can withstand. According to the standard of the heel of the shoe, when the visual inspection is done, break the heel first and then observe the deformation of the mouth. If the deformation is large and the heel may have problems, remove the insole and see the heel installation.

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