... Drawing board 1,Notice board,With magnet 2,Non-reflective,double-sided use 3,zero flying-dust,low-frequency spectrum 4,welco Drawing board: ... .The colour achieves clarity and softness. Non-reflective (glare degree ≤10 °)4.Extreme hard (≥5H ), and with a strong resistance to ... writing and rubbing needs (400g force ≥100,000 times).SPECIAL ...