... Notice board,With magnet 2,Non-reflective,double-sided use 3,zero flying-dust,low-frequency spectrum 4,welcome OEM Drawing board with ... magnet, Green Message Board, memo board: specifications: 1. It is composed of high ... reflective (glare degree ≤10 °)4.Extreme hard (≥5H ), and with a strong resistance to writing and rubbing needs (400g force ...