Dongguan green ring ink technology   

UV fluorescent ink (ultra-violetfluorescentInk) is visible fluorescence compounds in ink by adding corresponding made. The security features are: printing invisible in normal light, under ultraviolet light, can emit flashing fluorescence. LW: red, blue, yellow and green no =, grass green printing, letterpress and offset printing, gravure printing applications: money, notes, cards, printing, cosmetics, medicines, smoke wine labels, packaging, brochures and other security requirements with high.