Make designs according to certain standards or conditions, Includes planning, calculation, design up to the production stage.
Make design drawings in 3d to get a clearer picture and perform simulations.
Make a list of the materials needed and calculate the costs required to manufacture a product.
Similliar with some software design, AutoCad, Solidworks, SketchUp, Corel, Photoshop and software rendering Keyshoot and V-Ray.