Invisible ink Marked mahjong And dominoes With contact lenses use cheating
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We print the invisible ink on the mahjong , then put on a special contact lens. You will see the above mark, which is a special kind of ink that cannot be seen by the naked eye.we usually mark Mahjong tiles on one, two or three sides. There is no chromatic aberration between the original Mahjong tiles and the processed ones. Besides, the marked Mahjong tiles are not sticky with the infrared ink on their back.you can customize it according to your requirements.
We provide invisible ink printing. we can printing on domino, mahjong,poker and so on. marking with invisible ink but still look like the normal cards,only can be seen by contact lenses or Special magic glasses
Those infrared marks are invisible to human naked eyes and they can only be seen by wearing infrared contact lenses or sunglasses, both of which are also available from our company. So, if you want to use our infrared ink marked Mahjong tiles to cheat at Mahjong games, don’t forget about the infrared contact lenses or infrared sunglasses.