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the product is designed in modern style and adopts the white board material in high quality.it is suitable for using in the offices,schools and family. 1,high strength oxide aluminum frame in grey silver. 2,high quality oil paint board surface 3,ABS corners with high toughness 4,inimitable bold tray,convenient to put -on and take -down. 5,different size avaiable :40*30,50*35,60*40,60*45,70*50,80*60,90*60,100*60, 100*70,100*80,120*80,120*100,150*100,180*100,200*100,200*120,240*120