Infrared marked dominoes is one of the popular entertainment products that work with UV ink contact lenses, which is similar with the contact lenses marked cards.
Double 6 dominoes are the most common ones, when comparing with the double 9 dominoes and double 12 dominoes. We have many brands double 6 dominoes, which are packed in different material packs, including wooden, plastic and metal.
Our experienced and skillful technicians can mark all these dominoes well with invisible ink marks for marked cards infrared contact lenses to see. The marked dominoes look exactly the same as the normal clean ones in the appearance and no naked eyes can see any marks. However, you can see the marks of the number easily with the IR contact lenses and enjoy the games a lot.