Best invisible Ink For Marking Mahjong

Mahjong games are popular entertainment party games and gambling games. The Mahjong game originated in Kiang but has been welcomed by people all over the world.
Mahjong tiles have some of the same features as domino tiles. As you can see, the material is made of bone or plastic. If you want to put UV invisible ink marks on the back of mahjong, it is difficult to write luminous ink marks on the back. Must buy mahjong with UV mark with invisible ink contact his lens from professional supplier.
If you have any requirements for your own Mahjong tiles, just contact the manufacturer and he can mark the Mahjong with UV ink according to your needs.