Quality requirements for spice tin lids

1. The lid must have a certain degree of thermal shock resistance, that is, it will not cause serious damage to the ground surface when dropped from a normal desktop height

2. The lid wood should be adhered to the plastic lid and should not be detached or cracked

3. The screw threads on the lid and bottle body should twist smoothly and there should be no jamming, jamming, or slipping

4. There should be no obvious dirt or oil stains on the surface or inside the bottle body

5. No cracks or scratches are allowed

6. There should be no obvious odor or irritating odor.