Chalk Board 1.For making white board,chalk board 2.Apply for chassrom, office. 3.Competitive price Chalk BoardFeatures: 1) Thickness: 0.23mm, 0.25mm, 0.27mm,0.30mm,0.35mm.0.40mm.2) Width: A) Coil: 1, 200mm, 1, 000mm. 1190mm.890mm.B) Sheet: According to option of our clients3) This kind of products are used in schools, offices and so on4) Material: galvanized steel, or cold roll.5) Surface coating ...