1. The surface of the box should not be allowed to have any damage and stains, no rust, peeling, cracking, and other paper defects. The paper in the box must not be spliced, lack of material, exposed, wrinkled, or glue. Chromatic aberration and other sensory defects, the same batch of products, paper whiteness, paper must be consistent, pre-printed and offset UV packaging box UV paper surface allows slight cracks, does not allow the phenomenon of dregs.
2. The printing pattern of the box is clear and correct, the depth is consistent, the placement is accurate (the range of overprint error is ±1mm), the printing ink is not allowed to appear out of ink, there is no typo, misprint, missed printing, reprint of excess printing patterns and handwriting There should be no more than 5 leaks within 1 mm × 1 mm of each box. If there is excess ink, there must be no more than 5 in the size of 1 mm × 1 mm per box on the front of the box, and 2 mm per box on the side of the box. The size of ×2mm must not be more than 5, and the barcode must be identifiable.
3. The width of the indentation line of the box should not be larger than 12mm. The folding line should be centered. There should be no redundant indentation lines such as cracks, broken lines, and heavy lines, as well as affecting the sensory track defects.
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