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Temperature sensitive ink (TSI), also known as thermochromic ink, is a type of ink that changes color in response to temperature changes. It's commonly used for novelty items, security features, and scientific applications.

Photochromic ink is used in a variety of applications, primarily where a color change is desired in response to light exposure. Here are some of the most common uses:

photochromic ink can last for several years when stored properly and protected from excessive UV exposure.

The shelf life of temperature-sensitive ink can vary depending on several factors, including:Storage conditions，Ink type，Manufacturer

UV flexographic printing and cold stamp foil glue process has been applied more and more widely, and the market development space is very large, mainly used in trademarks, especially wine labels and daily chemical labels

UV offset printing machine needs to install UV curing machine or built-in UV curing system and other equipment.

UV flexographic printing cold ironing glue can be directly printed on the machine. It is especially suitable for printing of flexible packaging, self-adhesive labels, etc. Compared with general solvent or water-based ink, it has higher viscosity and viscosity, stable ink, good transferability, fine dot printing, and stable printing performance for a long time.