With the rapidly development of technology and society, there are more and more people would like to use the light lamp in private clubs, texas holdem and magic show. We install a concealable infrare

In the impression of most people, the invisible ink marks on the playing cards are made by printer. Because they can see the marked cards printer for sale on the menu bar. But today, we want to give y

IR lens is also called infrared lens, which uses a special optical glass material, and the latest optical design methods to eliminate the visible and infrared light focal plane offset, to let you see