Marking Lion cards with invisible ink
Lion marked cards are sold in GS luminous ink suppliers.
Lion playing cards are marked by using cards marking ink so that contact lenses can read its invisible marks. Be noticed that naked eyes cannot see through Lion poker marked cards directly. These magic marked cards are suitable for you in poker games.
Lion marked cards are not normal playing cards but they have the same appearance as regular poker. Other poker player do not know your Lion cards are magic marked cards.