Bonus Marked Cards with Invisible Ink Marks
Bonus playing cards are made in US and can buy online or in shops in USA and some other countries. In China it's difficult to buy Bonus cards but we import the cards from foreign countries. We mark the nice Bonus playing cards with invisible ink by machine, which is an advanced technology now. These marks with numbers and suits is invisible to any naked eyes. But you can see it clearly with our poker contact lenses or infrared sunglasses.