Swipe Dri Mark’s counterfeit detection pen on a phony $20 bill and the ink comes out black, like a permanent marker. If it’s real money, the ink is gold and fades over time. The specialty ink in the ...
You know how your dry-erase markers allow us to simply wipe off bad ideas, wrong answers in class, and un-Picasso-like doodles from whiteboards? Well, Dri Mark is to thank for that. Dri Mark has been ...
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