Black color change glass mug
Size：dia:8cm,height:9.5cm
Advantage:
1.competive price
2.Micowave & dishwasher safe
3.You can design the products as you desire
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Magic mug, --blue glass color change mug , red color changr mug , black color change mug
When mug gets cool, it shows black color . when pour hot drink in, the black will change to transparent.so the image under will appear.
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