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Raw materials are materials that have been harvested from the earth. Lumber, metal ores, and grain are all examples of raw materials. Processed materials are materials which have been refined or built by humans from raw materials.Examples would include paper, steel, or glass.rocessed materials are materials which have been refined or built by humans from raw materials.
Cellulose for industrial use is mainly obtained from wood pulp and cotton. The kraft process is used to separate cellulose from lignin, another major component of plant matter. Paper products: Cellulose is the major constituent of paper, paperboard, and card stock.