As efficient management of product information that covers the whole life cycle is critical to the enhancement of corporate competitiveness. This paper explores the design and development of a World Wide Web (WWW) based product development information management system for a cross-nation manufacturing corporation that is headed by a holding company in Christchurch, New Zealand. Since product data are often managed in a distributed computing environment, common object request broker architecture (CORBA) is employed to ensure the interoperability among distributed information objects. A STEP-based information framework is proposed to preserve the openness of the system. This WWW-based information management system is discussed in this paper, which includes two major components: 1. WWW-based product design and development distributed object-oriented databases and knowledge bases. 2. A WWW-based integrated system platform. Several submodels are introduced, which include an object-oriented database structure, a WWW-based information management system, a WWW database tool, an information access tool, the incremental process-planning method, a cost-optimisation model and an integrated software platform for the integration of CAD, CAPP, CAM, and a WWW-based information management system.