What is product line, product mix, line extension, line width and line depth?

 Product line-a company/organization creates a group of products, which has in common most of their main characteristics.

Product mix-an organization creates many products and, of course, sells them.So, the product mix is everything organization sells. 

 Product line depth- A product line contains a number of items, this number being called product line depth.

Product mix width-An organization creates a number of product lines. The total number of their's product line is called product mix width.

Product line extension-Not a modified in their characteristics  product , but a total new one, added to an organization's product line produces an extension of that product line.