Anti-forgery optical variable Pigments, also called?Optical Color-Changing Pigments, are special metal powders that change color depending on the angle. They appear as colored powder and are suitable for making various inks, coatings and plastic products. Its anti-forgery ?effect is that when viewed from the front and side under white light, it will show two or several different colors. It has strong light change characteristics, large color difference changes, and obvious features. Its color angle effect cannot be used by any high-definition scanner or color scanner. Copiers and other equipment can copy, and the anti-forgery ?reliability is extremely strong.
? ? ?Optically variable pigments are designated by many countries in the world for the most stringent and difficult anti-forgery ?of currencies and securities.?Some well-known domestic manufacturers have also used them for the anti-forgery ?of tobacco, alcohol, pharmaceuticals, cosmetics, and beverage packaging and printing labels. .It can also be called?Photochromic powder（Optically changeable pigments）
