Matsui
http://www.matsui-color.com/
Matsui offers a wide range of thermochromic, photochromic, hydrochromic and aromatic pigments, inks and ink products for a broad range of applications. The Chromicolor range of products are heat sensitive and activated at varying temperatures, the Photopia range of products are activated by the introduction of UV, the HydroChromic pigments interact with water to offer a number of possible applications and the Aroma AQ products are encapsulated fragrances, referred to as 'scratch & sniff'.