Tokyo Koki Co. Ltd. operates across Japan, specializing in the production and distribution of an array of precision testing and measurement instruments. The company delivers solutions for evaluating materials through static tension, compression, bending, and fatigue analysis, alongside offering structural and performance validation systems, and expert contract testing services. Beyond its core machinery offerings, Tokyo Koki also manufactures and supplies a variety of securing components, including locking nuts, specialized springs, and bolts, while providing comprehensive engineering support for residential applications and maintenance for its industrial equipment. Furthermore, the company maintains operations in construction material sales and engages in overseas ventures focusing on plastic injection molded products. Established in 1923, Tokyo Koki Co. Ltd. is headquartered in Sagamihara, Japan.