How long the marking playing cards for lens and for barcode can be used if I open the marked decks. Marked cards technician find the special luminous ink for the KEM playing cards for x ray contact lenses to read.
Playing cards features:
1. Color pattern on the back of cards: black and red
2. Kem arrow playing cards index,100% plastic
3. The deck contains 52 cards and 2 jokers
4. package also contains a card to certify the guarantee
5. Card size: 57*89 mm
How to mark KEM arrow luminous cards?
blue cards: marked a big font in the middle of the card (white mark)
red cards: marked with fonts in four corners or big font in the middle of the card (white or black marks)