Tokyo, Japan and Paris, France, February 28, 2005 - Dassault Systèmes (Nasdaq: DASTY; Euronext Paris: #13065, DSY.PA) and ZUKEN (TSE 1st Section 6947), a leading producer of design and manufacturing solutions for electronics companies, today announced an agreement through which they will deliver comprehensive PLM (Product Lifecycle Management) solutions for the E&E (Electrical and Electronics) industry. This represents an important agreement between a leading PLM solution provider and a leading maker of EDA (Electrical Design Automation) solutions.

The E&E industry faces the challenge of delivering products with higher added value and greater complexity while further shortening delivery times. This requires a concurrent development environment for all aspects of product development, including mechanical design, electronics, and embedded software. In addition, highly consolidated electrical circuit design requires interference checking with mechanical components and high-level verification within the 3D environment. The Dassault Systèmes-ZUKEN agreement will solve these problems by bringing the E&E industry a robust set of fully integrated and industry-proven solutions, providing a complete digital mockup view of the product.

Through this agreement, Dassault Systèmes and ZUKEN will engineer, deliver, and implement integrated 3D design and process solutions specific to the E&E industry built on CATIA V5 and SMARTEAM technology. These solutions will encompass end-to-end E&E development processes from system engineering to parts definition, assembly, manufacturing, and recycling, significantly accelerating product development.

ZUKEN will develop a new solution for providing integration services called SmartModeler, based on SMARTEAM V5. SmartModeler will cover the process flow for Electrical CAD and Mechanical CAD, as well as integrated data management, including 3D Component Libraries. In addition, ZUKEN and Dassault Systèmes will provide a series of IMPD (Integrated Mechanical Product Development) solutions for electro-mechanical integrated development processes, and CSE (Collaborative Systems Engineering) solutions to support requirements analysis and systems design processes in a collaborative environment.

“Due to the incredible density and complexity of electronic devices, demands for integration between electronics design and 3D mechanical design are rapidly increasing in the E&E industry,” said Yasushi Ueno, director of 3D Solution Business at ZUKEN. “This agreement between Dassault Systèmes as the leader in PLM and ZUKEN as the leader in electrical design represents a major milestone for PLM’s progress in the E&E industry.”

“This strategic partnership demonstrates our determination to provide the most complete solutions for the E&E industry,” said Etienne Droit, executive vice president, PLM Sales and Distribution, Dassault Systèmes. “ZUKEN, the leader in its field, understands E&E processes thoroughly and will help us achieve our goal of delivering integrated solutions for process innovation to E&E customers.”

About Dassault Systèmes
As world leader in 3D and PLM (Product Lifecycle Management) solutions, the Dassault Systèmes group brings value to more than 80,000 customers in 80 countries. A pioneer in the 3D software market since 1981, Dassault Systèmes develops and markets PLM application software and services that support industrial processes and provide a 3D vision of the entire life cycle of products from conception to maintenance. Its offering includes integrated PLM solutions for product development (CATIA®, DELMIA®, ENOVIA®, SMARTEAM®), mainstream 3D product design tools (SolidWorks®), and 3D components (Spatial/ACIS®). Dassault Systèmes is listed on the Nasdaq (DASTY) and Euronext Paris (#13065, DSY.PA) stock exchanges. For more information, visit http://www.3ds.com