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 ... -sided use, and long life.2. It uses green baking paint of a low-frequency spectrum, which is well adapted to ... . Non-reflective (glare degree ≤10 °)4.Extreme hard (≥5H ), and with a strong resistance to writing and rubbing needs (400g force ...