Color changing sticker / card is produced with thermochromic material that changes color due to temperature. The sticker / card color will be changed after the temperature reaches the point for color change. It usually includes cold sensitive color changing sticker / card, hand sensitive color changing sticker / card, hot sensitive color changing sticker / card.

In fact, most of thermochromic card are produced into hand sensitive color changing card, changing color by hand temperature.

Cold sensitive color changing sticker is usually used in refrigerator, cold store products etc.

Hand sensitive color changing sticker is mainly used as children’s play, child potty training etc.

Heat sensitive color changing sticker often is used for science experiment for children and testing high temperature.