Up-conversion Anti-counterfeit Phosphor is a luminescent material that converts different invisible infrared light into visible light. Usually we use INFRARED ( IR ) phosphor for anti-counterfeit inspection.  Making full use of technology advantage of Chinese Academy of Sciences, KPT is the first company in China that develop this product, the quality has achieved the leading level of the world. it has characteristic of sensitive response, rich glowing colors, long lifetime, easy test and the most important-- high safety  and concealed ability, by using it, IR (infrared ray) beam can be efficiently detected, tracked. identified and proofread etc.