Toyoda Gosei Co Ltd (Toyoda Gosei) is a specialty manufacturer of rubber and plastic automotive parts and light-emitting diodes (LEDs). The company also utilizes its rubber and plastic technologies to develop products for automobiles, air conditioning, construction, and other industries. It develops and produces rubber and plastic automotive products in six areas, weatherstrips, functional components, interiors and exteriors, safety systems, life solution and the Re-S ethical-brand.

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Toyoda Gosei is actively engaged in research and development activities aimed at creating innovative products and technologies. The company's recent major achievements include the development of a Steering Wheel for Steer-by-Wire Systems, Ultra-Thin Register for in-car air conditioners, Portable Hydrogen Cartridge, and a Sound Experience System using Sealing Components. Additionally, Toyoda Gosei is focused on promoting recycling technologies for rubber and resin products, developing bio-materials, and advancing products and production technologies for electric vehicles, including BEVs. The company is also working on high value-added products aligned with future advancements in autonomous driving technology. The R&D units of Toyoda Gosei include the Development Headquarters, various automotive-related business divisions, and the New Value Business Division in the Japan region. These units are responsible for managing the company's R&D activities. Overseas subsidiaries such as Toyoda Gosei North America Co Ltd, Toyoda Gosei Europe Co Ltd, Toyoda Gosei (China) Investment Co Ltd, Toyoda Gosei Asia Co Ltd, and Toyoda Gosei Uno Minda India Co Ltd. collaborate to conduct global research and development activities. As of March 2025, the company held over 2,354 patents in Japan and 2,045 patents internationally. In FY2025, the company incurred a research and development expenditure of JPY9,457 million which was 0.9% of the company's total revenue.