Branding is one of the branches of marketing that was emerged during 19th century by entrance of packed products. Unique form of Coca-Cola bottles, round blue-white logo of BMW and colorful logo of apple with a bite taken out are all significant samples of brands which are recognized immediately because of their logo. In fact, the merchants are selecting a specific sign and distribute their products with that sign in order to distinguish their products from products of other firms. The main consequence of this effort is that a consumer may immediately realize that the product belongs to his/her entrusted company. Usage of logos is so prevalent that a client may purchase a product only on the basis of its brand and logo while he is has no information about its manufacturer or related firm.