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Part 2
      The engineering stage of  product manufacturing is supposed to specify specific qualities of a product.  At this stage, engineers test the performance of the product.  Engineers make sure that the product has no flaws and can be successfully manufactured.  The information gathered from these tests is given to the production personnel to help improve the product's performance.  Production of a product requires many people, materials, labor, and capital.  Much communication is needed between all production staff.  The staff has to know the exact dimensions of the parts being manufactured as well as how they go together.  To ensure that everything is produced correctly, detailed technical drawings and charts are used.  There are many ways to produce a product.  Today, many methods, including electrical, mechanical, and automated are used.