This product uses the principle of friction heating ink invisible, resulting in erase the effect of handwriting. At room temperature, the handwriting of the product remains unchanged. When the temperature is higher than 60 ℃, the handwriting disappears. When the temperature is -18 ℃, the handwriting is restored and reprocessed.
1, writing fluent, clear notes
2, color variety, colorful
3, erase clean, erase without damage
4, fashionable and environmentally friendly ink
5, suitable for students to write, office painting, textile fabric mapping