What is a MDO singage?
MDO, also known as Signboard, is an exterior-grade plywood with a high-quality fiber surface saturated with phenolic resin solids. ... This plywood is often used for exterior signs. Using layers of C grade and B grade wood, the thin wood veneers are layered perpendicular to each other to provide stability. ... The overlay coatings are made from waterproof resin-impregnated fiber, making MDO 100% waterproof.