Fax paper, ATM slip In our daily life, it is possible for us to contact thermal paper.

How can you tell if you get thermal paper? In fact, the method is very simple, with fingernails, coins, keys and so on gently draw a line on the paper, because friction can generate heat, causing heat sensitive substances to color. Therefore, after being scratched will leave traces (generally gray) are heat sensitive paper. Most of the heat sensitive paper that we come into contact with in our life is bisphenol A.