Q.5 Are there hard UV ink and soft UV ink?

— There are special UV ink for soft materials and UV ink for hard materials.

For example, if you want to print on cow leather, PU, artificial leather, TPU (phone case), Canvas (for oil painting) such soft materials, you need to choose the soft-UV ink .

If you are going to print on acrylic, ceramic,wood, glass, metal, aluminum these hard materials, you need choose hard-UV ink.