black board,note board,writing board

black board,note board,writingboard 1.Painted steel sheet. 2. Inner of the green board can be 7-layer strongs cardboard, Honeycomb board, MDF board 3. The back face material is Galvanzied zinc sheet 4. With aluminium frame and ABS corners 5. With 2pcs/4pcs hangers for fixing on the wall, with 1pc pen tray for puting marker 6. Package: each board with individually box packing, then serval pieces per one big carton box packing.