What is the project flow of any kind of electronics product (from design stage to manufacturing stage)?

1.) what will the product be used for?
2.) what would be the best type of construction of the product?
3.) the product would then be designed.
a.) type of metal or alloy to be used.
b.) size of conductor needed.
c.) flexibility of conductor.
d.) single strand or multiple strands.
e.) diameter,circular mil area,weight per thousand feet,maximum direct current resistance needed for product.
f.) if multiple strand, type of construction.
g.) are there certain criteria to meet? (standards/specifications).
h.) type of jacket/compound to be used?