PingWei Anti-forgery Ink Limited

my Vietnam customer bought temperature inks from my factory
 
my Vietnam customer bought temperature inks from my factory
(2). Reversible temperature sensitive ink
Reversible temperature sensitive ink includes three kinds: coloration, fading and discoloration ones. Reversible coloration temperature sensitive ink is colorless in appearance but shows colors after being heated and can restore colorless after being cooled. The original color of reversible fading temperature sensitive ink disappears after being heated and it can restore its original color after being cooled. The original color of reversible discoloration temperature sensitive ink can be changed into another one and it can restore its original color after being cooled.