Abstract
In the recent mature market condition, new products with higher quality and adding multiple functions are not enough to gain competitive advantage. Organizations need to consider differentiation by the supplementary elements of products. The supplementary elements support improvement of product value and smooth market penetration. The research focus on the interrelations between products and consumers in whole product life cycle period. Several previous similar researches related with product life cycle are value chain and life cycle management. However, major purpose of these researches are quality contorol and/or cost management. In this research, in order to consider the method of differentiation by the supplementary elements of products, the system of interrelations between products and consumers are discussed.
