Abstract: This paper concerns the issues of technology selection among different stages of a product’s life cycle,in an environment characterized by multiple products,multiple periods and random demand.Partial flexible technology,defined as the ability to produce a subset of a product family,its investment and operational cost are highly related to its flexibility.Based on demand scenarios,a mathematical programming model for determining technology selection and capacity planning is developed to minimize the expected total costs;the described model is then applied to analyze the technology selection difference between a product’s introduction stage and mature stage.

Key words: partial flexibility, product life-cycle, technology selection