Anime Demon Slayer Cups
Anime Demon Slayer Cups
The color-changing ink used in the color-changing cup is a non-toxic, non-polluting, and non-polluting ink synthesized from biological materials. Their principle is: the temperature-sensitive material is printed on the cup body , The materials used are heat-sensitive materials, resistant to high temperatures of 320°C, non-toxic, lead-free, and chromium-free, and have passed the US FDA and European LFGB standards.
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