1.Visual inspection
1) No damage or crack on the appearance, clean surface, no slack and foreign matter adhesion, no glue layer and other abnormal conditions;
2) The edges are neat, without black spots and burrs;
3) Ventilation holes are free of burrs, lifted, and not punctured;
4) The plastic bag has good transparency, the surface is flat, there are no live folds and no obvious pops.
2. Size check
Dimensions must meet purchase order contract requirements.
3. The PE bag stitching is strong
4. Meet food grade standards
1) Must comply with the requirements of toxic and hazardous substances in laws and regulations of relevant countries;
2) Have QS production license.