30 Degree Reversible Temperature Sensitive Ink

Temperature sensitive ink is also known as thermochromic ink, thermosensitive ink or temperature indicating ink. Temperature dependent inks can be divided into three types: 1. Display a specific color at room temperature. After heating, the color will disappear and become colorless. After cooling, it will return to the original color immediately. It's a reversible, colorless to color, temperature sensitive ink 2. it is colorless at room temperature, and becomes another color after heating. After cooling, it will return to the original colorless color. Because of its reversible change process, it is called reversible colorless to colored temperature change ink. 3. The ink displays one color at room temperature and changes to another color after heating. Because the change process is reversible, it is called "reversible temperature change to color ink";