Invisible Ink Markings on Mahjong

Are you interested in playing mahjong game? You will know more information about mahjong from us. Mahjong is a traditional playing game in China. There are lots of people playing mahjong in the world. So there must be players want to buy the best mahjong cheating device right now.
We produce invisible ink mahjong to match with luminous ink contact lenses. These invisible markings only can be seen by infrared contact lenses or perspective sunglasses, and we can’t see the markings with our naked eyes. You can use this marked mahjong to cheat at all kinds of mahjong games because you can see the mark on the back of luminous mahjong clearly.