The Sumitomo Group is a large Japanese conglomerate with a diverse range of businesses. Founded in the 17th century, it originally started as a copper mining company. Over the years, it has expanded into various sectors, including finance, real estate, and manufacturing, making it one of Japan's oldest and most influential business groups. The group operates through numerous subsidiaries, such as Sumitomo Corporation, which is involved in trading and investment, and Sumitomo Mitsui Trust Holdings, focusing on financial services. The Sumitomo Group is known for its commitment to sustainable development and corporate social responsibility, reflecting its long-standing values.