The application of optically variable pigment ink on currency and security documents.

Optically variable pigment-based intaglio and screen printing ink has been widely used in currencies, securities, cards, anti-counterfeit documents, and high-end packaging.

Among them, "Furongwang" + "Hetianxia" brand cigarettes produced by Hunan China Tobacco, "Huanghelou" brand cigarettes produced by Hubei China Tobacco, "Wuyeshen" brand cigarettes produced by Guangdong China Tobacco, and "Jixiang" brand cigarettes produced by Lanzhou China Tobacco have all adopted optically variable ink for printing.

As of now, there are still more than 30 provinces (municipalities, autonomous regions) in China where cigarette packs produced by China Tobacco have not been printed with optically variable ink.