What is product design?, 3 Factors affecting Product Design, Effect of product design on cost, product design process

What is Product Design?
Before starting to manufacture a new product or improve a product, it is essential to design the product first. 

When a new idea has been conceived and developed to the point at which it shows itself to be both technically and commercially stable, it considers how the product should be made, Factors affecting product design, etc. 

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