A ceramic steel surface is designed to resist the pigment absorption that causes permanent ghosting, which is why boards built with it tend to still perform well a decade later. Lower-grade surfaces, such as melamine or lacquered steel, absorb pigment over repeated use, and that damage accumulates in a way cleaning cannot fully reverse. This single specification decision tends to matter more than almost any other over the full life of the board. Chameleon’s ceramic steel is built on a moisture-resistant, FSC-certified MDF core with an enamelled top layer that is Cradle to Cradle Bronze certified, which is part of why the surface holds up as well as it does over a decade of daily use. The same construction also resists warping and edge lifting far better than a standard particleboard core, which is often what actually forces an early replacement rather than the writing surface itself failing.
This is also why Chameleon backs ceramic steel with a lifetime warranty on writing and erasing rather than a fixed term, and why panel size, up to 1180 by 2980 millimetres for a single piece, has no bearing on how well the material itself holds up over a decade.