Journal
LONG RANGE PLANNING
Volume 33, Issue 2, Pages 245-267Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0024-6301(00)00027-3
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Portfolio models have been used in strategic planning and marketing, but their application to the field of purchasing has been limited. This seems, however, to be changing, as procurement management has become more strategic. Applying portfolio models to purchasing can introduce a major risk in that the implications for suppliers and/or operational staff are scarcely considered. This article explores existing portfolio models in purchasing, which classify purchases into different product categories. Based on case studies of two automotive OEMs and two vehicle industry suppliers (all European), together with benchmarking interviews at Toyota, Japan, we attempt, firstly, to link these product categories to different types of suppliers and, secondly, to link the product categories and the supplier types to the specification process-in other words, to link the specification types and the specification generators. We argue that product categories must be matched by distinctive suppliers that have the required capabilities and capacities to satisfy specific product demands. The connection between the portfolio models and the specification process will help original equipment manufacturers (OEMs) and suppliers to improve relations with each other. (C) 2000 Elsevier Science Ltd. All rights reserved.
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