About Us

TPR Co., Ltd. is a global leader in the development and manufacturing of precision engine components, including piston rings, cylinder liners, and other engine components, serving the automotive, industrial, and marine sectors. Headquartered in Japan, TPR combines decades of engineering expertise with a commitment to innovation, quality, and sustainability. In addition to its core offerings, TPR is advancing next-generation materials technology through the development and production of its top class 2mm carbon nanotubes (CNTs). These cutting-edge materials support high-performance applications across mobility, electronics, and energy sectors, contributing to lighter, stronger, and more efficient products. With a global footprint and a focus on long-term partnerships, TPR continues to drive progress in both traditional manufacturing and emerging technologies.