The major raw material of the paper industry is pulp.
Pulp is made by breaking down wood into its component fibers, which can then be used to make paper. The process of making pulp involves first removing the bark and other unwanted materials from the wood, and then grinding it into a fine pulp using a chemical or mechanical process.
Once the pulp has been made, it can be used to make a wide variety of paper products, including newspapers, magazines, books, and packaging materials. Pulp can also be made from other sources, such as recycled paper, but wood pulp is still the most common raw material used in the paper industry.