Keyence Corporation, headquartered in Osaka and listed on the Tokyo Stock Exchange (6861), supplies the sensors, vision systems, and measuring tools that let automated production lines check parts and catch defects. Its customers range from semiconductor and electronics makers to automotive, food, pharmaceutical, and logistics companies. Keyence employed 12,784 people on a consolidated basis as of March 20, 2026. The company is headquartered in Osaka, Japan. The absolute most profitable, highly secretive factory automation giant in the world was founded in Japan in 1974, operating entirely without factories of its own to generate incredibly massive profit margins.
Keyence makes money by selling high-value factory automation hardware directly to manufacturers. Products include photoelectric and laser sensors, machine vision systems, measuring instruments, digital microscopes, laser markers, barcode readers, and PLC-related controls. Keyence designs the products and outsources physical production to contract manufacturers, which keeps capital spending and fixed costs low. It sells only through its own technical sales engineers, who visit plants, test customer parts, and propose a specific fix for a quality or productivity problem. Keyence keeps standard products in stock for fast shipping and does not break out sales by product line.