Writing Board Steel Sheets

"Writing performance testing" is typically conducted on stationery consumables (such as highlighters and markers) or writing surfaces intended for educational use (such as blackboards and whiteboards). Key performance indicators include ink adhesion, ease of erasure, resistance to graffiti, legibility, and durability. In contrast, "green color-coated metal sheets"—classified as composite materials for architectural and industrial applications—feature surface coatings primarily characterized by properties such as abrasion resistance, weather resistance, and salt spray resistance. For color-coated steel blackboards and whiteboards intended for educational use (e.g., panels with a 0.3–0.4 mm thick color-coated steel surface), specific requirements emphasize a pleasant writing feel, ease of writing and erasing, and minimal dust generation; consequently, testing focuses primarily on the physical response characteristics of the surface coating rather than on the metal substrate itself. Conversely, green color-coated sheets intended for industrial use (e.g., in shades such as RAL 1000 Rice Green or Fluorocarbon Green) prioritize weather resistance, corrosion resistance, and processability.