淩雲科技 Holo solution Inc.Scratch off Ink | OVI OCEP availableScratch-off Ink can also be combined with OVI (Optical Variable Ink) and OCEP (Optical Changeable Effect Pigments)
淩雲科技 Holo solution Inc.Anti-counterfeit Ink List - Ink is lifeless, but the design is alive!Under different conditions such as special light sources, angles, and temperatures, the ink will appear, change color and undergo various...