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Prior to the manufacture of a product which is composed of many parts, it is necessary to determine how many parts of each kind are required.1,2 The process of determining the number of parts required to build a planned number of a given product is called a requirements generation or parts explosion. For example, to manufacture one square, jeweled box with a lid, the parts shown in Table 1 are needed for assembly (or, in manufacturing terminology, for final assembly). To build 200 such boxes, obviously 200 times each quantity listed is needed. This is the essence of requirements generation.
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