Sanyu Co., Ltd.was originally the Hofu office of the former Mitsui Bussan. When GHQ ordered the dismantling of the former Mitsui Bussan in July 1947, a number of employees established the company to contribute to the rebuilding of the country through construction material sales. Since then, in addition to fuel (LP gas,) construction materials (ALC etc.) housing related products, and computers, developed a related work construction profile.