Zipper are important trims of several garments, its quality must be test for strength and corrosion of its every component.
01::: Chain crosswise strength
02::: Pull-off of slider pull
03::: Top and Bottom stop holding
04::: Bridge Top Stop
05::: Bottom, Crosswise
06::: Bottom, Stringer separation
07::: Element pull-off
08::: Separating unit, crosswise
09::: Slider lock holding
10::: Move slider force
11::: Sticking at stops
