* The technical attributes reflect the use, functionality of the product. The quality of these attributes manifested through the norms of physical structure, composition and characteristics of organic, physical, chemical products. * Aesthetic elements: characteristic for the emotional, logical in form, texture, size, calculated balance, color, decoration, computer fashion. * Shelf life of the product: is the factor specific to the nature of the products retain the ability to work normally in accordance with the design standards of a certain period, on the basis of ensuring that the requirements regarding the purpose, conditions of use and maintenance mode.
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