What is local ultraviolet?

There are three kinds of local ultraviolet rays. I don't know which one you want:

First, the printing machine prints UV oil, not the current UV printing. Thin, average brightness.

Second, used oil-based UV machine primer +UV oil, where UV is not used, stick it with a detachable sticker; If the brightness of the base oil is not good, it will be brighter than the UV oil of the printing machine.

Third, use a screen printer to pass UV oil, which is the thickest and brightest.

The place behind UV is especially bright, just like a halo covering the place behind UV. It feels smooth.