How did the paper industry develop?

Paper industry refers to the main use of plant fibers or other related raw materials, through a series of processing processes (according to the nature of the product to add the appropriate amount of rubber, filler and color) to make a variety of paper industry. Including pulp and paper. At present, the varieties of paper have more than 1000 kinds, such as white paper, colored paper, rice paper, wax paper, newsprint, wrapping paper (box, box), film, paper and other types, is one of the important sectors of light industry, and people's lives are very close. Papermaking is one of the four great inventions of our country. The rapid development of paper industry production has basically met the needs of various departments of the national economy. The northeast region is the concentrated area of China's paper industry, it has rich wood and reed resources, is the main base of national newsprint, among which Jiamusi paper mill is the largest paper mill in China; East China is China's largest paper production base, its paper raw materials are bamboo, wood, bagasse, waste cotton, wheat straw, straw, reed, etc. Shanghai is China's largest paper industry center, but also the country's main source of high-grade cultural paper; Tianjin in North China is an important papermaking center; The paper industry in Central and South China develops rapidly. Guangzhou Paper Mill is the industrial center of newsprint. Yibin paper-making center has been established in the southwest area with grass, wood and Longke as raw materials. The paper industry base in northwest China is poor, except for Xi 'an, Baoji and Xianyang, the rest are small paper enterprises.