How to use plastic see through playing cards

Where did you buy marking playing cards? Have you ever buy cheating playing cards in India marked cards factory? What do you think of the quality of India invisible ink marked cards? In my opinion, I think cheating playing cards in China is the best, take Modiano Skat marked cards poker as an example.
Modiano Skat marking luminous cards are printed by high tech machine, but you cannot see through its invisible ink cards markings directly. How to read cheating playing cards with invisible markings? Infrared plastic sunglasses can help you see through playing cards Modiano Skat. You can wear marked playing cards glasses to poker games or magic show.