Back-Side Marked Cards Contact Lenses Size:4 mm which are marked by printer

which are marked by printer with special invisible ink

You can made it into cards with mark or cards with invisible barcode surrounded by four corners

Once you have the plastic bicycle invisible ink playing cards

COPAG139 for lenses is such kind of marked deck

It has different quality standard to meet the different needs

Back-Side Marked Cards Contact Lenses Size:4 mm which are marked by printerPupil color Dark purple Pupil diameter 4 mm, 6 mm, 9 mm, 12 mm Water content 50% Validity period About 1 year Central thickness 0. 06 0. 10mm Application Magic, poker cheat, casino game Back side marked cards contact lenses are not a new idea for the markets. To meet the need of different customers, there are 4 different size 4 mm, 6 mm, 9 mm, 12mm in diameter. The contacts lenses is famous for the magic function of reading the invisible infrared ink