Sumitomo Electric Industries shares fell 7.25% in Tokyo trading on November 4, 2026. The company is expanding its range of cutting tools that use significantly less tungsten as it responds to global supply chain pressures and seeks to reduce reliance on Chinese raw materials amid China’s tighter export controls on the metal.
Separately, Sumitomo Electric will exhibit at electronica 2026 in Munich. Its showcase will include high-speed data transmission cables compatible with the latest Thunderbolt™ 5 standard and DisplayPort 2.1, along with flexible printed circuits and compound semiconductor wafers. The products reflect the company’s focus on high-speed communications and digital devices.