Sketch paper is a special paper for practicing sketching. Compared with ordinary paper, ordinary paper is thinner, smoother in surface and weak in adhesion to lead powder, so it is not suitable for pencil coloring. Sketch paper has a unique texture and is very easy to color. Sketch paper has strong folding resistance and good fiber tension, and can be used on both sides. Repeated lead coating will not glow, powder will not fall off, and it is easy to scratch.