Electronic product alone cannot go anywhere without packaging.  Furthermore, it is the packaging design that can raise your product above the others.  The importance of mechanical design in electronic product is very well accepted these days.

Plastic delivers flexibility and colorful output.  Plastic type has to be chosen carefully to fit the product requirement and environment.

A stronger portion of the product requires metal material for durability, electrical or heat conductivity.

Cool design is what customers are looking for.  It is the appearance that attracts them. 

Box of the product is also important for the safety of the product during transportation and how it looks on the shelf.