About Product:The product has the characteristics of structural science, fine craft, smooth writing, safety and durability, beautiful appearance and so on. No crack, no flow marks, no bubbles, exquisite and smooth, fluent writing, clear and clean after the stay, abrasion resistance and corrosion resistance, soft colors, fashionable and beautiful, students can watch any angle, the visual effect is excellent, effectively protect the eyesight health of teachers and students. Inside and outside the box are using high strength industrial electrophoresis aluminum alloy, wear-resistant, tensile, non deformation, beautiful and durable, and maintain a smooth. In school classrooms, multimedia classrooms, library, reading room and other large