(1)The cover
Complete, smooth, no deformation, no carbon joint, clean, dust-free soil, oil pollution, etc.
It should be well matched with the bottle and the outer cover, and should not leak out
(2) outer cover
Regular, smooth, no broken, crack, burst phenomenon, uniform color, not moving color, and the same as standard samples
The thread and other matching structures are in good condition.
Add anodized aluminum or bronzing should be uniform and complete, the color is the same as the standard sample
4. Flip the outer cover flexibly
The cover is tightly matched with the bottle, no wear, looseness and leakage phenomenon
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