Global paper production in 2017 was 413 million tonnes, with packaging paper being the main type. Chemical processes like kraft and sulfite are used to make pulp from wood chips. Kraft pulp, which makes up 83% of chemical pulp production, is the most common type. Mechanical pulp is made by grinding wood. The structure and properties of different wood species are discussed, along with the process of making bleached kraft and sulfite pulps. The article also covers how wood chips are turned into pulp through delignification and bleaching processes.