... of the chalk notebook:30*20cm. 2,function:written with chalk. 3,inprint:any logo and color available. 4,pages ... :1,which is chalk notebook,basic material is special 250g whiteboard paper.2,any color and logo can be ... blackboard,chalk board, whiteboard, writing & drawing boards and color clay for children. Our company takes quality as the ... a sound scientific quality management system. chalk notebook