prepainted steel for chalk board 1. specially designed for making white board. chalk board 2.meet up-market's requirement. prepainted steel for chalk board Features: 1) Thickness: 0.23 - 0.45mm2) Width: A) Coil: 1, 200mm, 1, 000mm. B) Sheet: According to option of our clients3) This kind of products are used in schools, offices and so on4) Material: Steel sheet5) Surface coating: Special paint ...