Anti-forgery Soaking discoloration ink
Soaking discoloration ink is divided into reversible coloration ink, reversible fading ink and irreversible fading ink. The color of reversible coloration ink changes from colorless to colored after water dribbles, and disappears after water evaporating, which includes colorless-red. The color of reversible fading ink disappears after water dribbles and it restores the original color after water evaporating, which includes white-transparency. The color of irreversible fading ink changes from colored to colorless after water dribbles and can’t restore the original color once again, which includes red-colorless and blue-colorless.