There are many kinds of paper, and the classification method is not consistent. There are three ways to classify habits.

　　1. According to the production mode, it can be divided into manual paper and machine-made paper. Manual paper is mainly operated by hand, which is made of curtain net frame and manually fished sheet by sheet. Soft texture, strong water absorption, suitable for ink writing, painting and printing, such as Chinese rice paper. Its output accounts for a small proportion in the total output of modern paper. Machine made paper refers to the general term of paper produced by mechanization, such as printing paper, packaging paper, etc.

　　2. According to the thickness and weight of paper, it can be divided into paper and paperboard. There is no strict distinction between the two. Generally, the weight of each square meter below 200g is called paper, and the weight above 200g is called paperboard. Cardboard accounts for about 40-50% of the total output of paper. It is mainly used for commodity packaging, such as box board, packaging board, etc. The paper and paperboard are usually counted separately in the world.

　　3. It can be divided into: newsprint, a kind of special printing paper mainly used for press and publication, is used to be listed separately due to its large proportion; printing paper, writing paper, used for printing and writing, including drawing and drawing paper; packaging paper; technical paper (industrial and agricultural technology paper); sanitary paper; processing base paper, used for further manufacturing and processing paper; paperboard; Processing paper, etc.