About National Marker Company


Learn More About Sign Muscle®

Custom! The options are ENDLESS

Custom High Impact Floor and Wall Communications

Sign Muscle Demonstration


How Much Are You Paying To Protect Your Signs?

NMC is adding more value to our safety signs and labels with the addition of our Sign Muscle™ coating, a coating designed to extend the life of the product.

Sign Muscle™ coating will protect your signs and labels from scuffs and scratches, while providing excellent color clarity and a smooth edge. The UV light inhibitors in the coating will also protect your product from fading. Best of all it's at no added cost!

Please feel free to contact us as we are excited to share our news about Sign Muscle™.


Inside the Lab!


Inside the Sign Muscle™ Lab!

Want to learn more about Sign Muscle™ from National Marker Company? How about a little history behind it?

Since our last Sign Muscle™ video generated so much positive feedback NMC decided to give you an inside look at the birth and evolution of this revolutionary new product. Watch National Marker's own mad scientist, Jim, as he formulates Sign Muscle™ right before your eyes! Make sure to follow National Marker Company on Facebook and subscribe to our YouTube channel at /nationalmarker to get more updates.