Soaking discoloration ink is divided into reversible fading ink and irreversible fading ink.

The color of reversible fading ink disappears after water dribbles and it restores tbe 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 not restore the original color once again.
Color:red,yellow,blue green and black.

Printing way:screen,silk screen and gravure