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EXHIEC 4,12 C\&C Sperts' materials requisition slip. How do managers know how much direct material to requisition for 35 jersey? Each product has a bill of materials that lists all the materials required to make a single unit of the product. You can think of the bill of materials as a recipe for making one unit. Exhibit 4,13 shows C s C sports bills of materials for baseball jerseys, baseball pants, and letter award jackets