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Visual inspection of the bags need to pay attention to what issues
Mar 30, 2016

1. wire: shade difference cannot be obvious, not dark and white shall not be granted before, after dark, changes frequently. Bag wire color is white, cannot mix two or more colors and shades of the color slightly.

2. layout and printing: the back of the plate surface clear, stack shadow-free, stain-free, pattern, line color to be consistent with the standard sample, color depth should be consistent with the same standard.