Abstract
Series of decision-makings strongly affect the corporate sustainability under rapid changing economical environment. Especially, Japanese production industry is affected by wide and cheap imitated products from LDCs, and specific product innovations from US and EU. Each production corporation is facing to set up a just-in-time decision making system for innovative products. In this paper, the authors focus on a "Core-Product" concept that should be a fundamental to draw out quick and focused decisions for product planning. The proposed framework to create "Core-Product" is also shown with illustrative examples.