Drawing board 1,Notice board,With magnet 2,Non-reflective,double-sided use 3,zero flying-dust,low-frequency spectrum 4,welco Drawing board: specifications: 1. It is composed of high polymer coatings, ultra-thin steel plate(thickness: 0.135 ~ 0.2mm), and composite plastic (PE) for both sides, produced by a high-temperature process. The overall panel is flat (flatness>3). Non-deformation, double- ...