The "Automotive Lightweight Technology Expo" in Tokyo, an annual trade fair held every January, is a leading event in the field of lightweight technologies for the automotive industry. Established in 2011 and organized by RX Japan Ltd., this expo has become a central platform where experts and industry leaders showcase innovative products and technologies that contribute to the production of lighter, more fuel-efficient vehicles without compromising safety. The expo covers a wide range of topics, including materials like high-strength steel sheets, thermosetting and thermoplastic resins, aluminum, magnesium and titanium alloys, ceramics, carbon fiber reinforced plastics, lightweight glass, and carbon nanofibers. It also presents molding and processing technologies, along with related equipment, such as press work, casting and forging technologies, injection molding and material mixing techniques, as well as laser welding and other advanced welding technologies. Another focus of the expo is components and modules that enable weight reduction through the use of lightweight materials. These include structural elements made from light metal alloys for bodywork, chassis, and powertrains, as well as resin materials for the exterior and interior parts of vehicles. The expo also offers insights into joining technologies for different materials, such as laser and ultrasonic welding, friction and diffusion bonding, adhesive technologies, and corresponding testing and analysis tools. Beyond these core topics, the expo addresses other technologies for weight reduction in the automotive sector, including design and structural analysis tools, as well as simulation and design technologies. A distinctive feature of the expo is that it is part of "AUTOMOTIVE WORLD," a larger event that covers various aspects of the automotive industry. The venue is Tokyo Big Sight, Japan's largest international exhibition center, known for its unique architecture and providing an ideal setting for such trade fairs. Overall, the Automotive Lightweight Technology Expo in Tokyo offers a unique opportunity for professionals in the automotive industry to discover and discuss the latest innovations and developments in lightweight technologies, making it an indispensable event for anyone in this sector. The Automotive Lightweight Technology Expo will take place on 3 days from Wednesday, 21. January to Friday, 23. January 2026 in Tokyo.