Mitsui Sumitomo is a major Japanese insurance company, part of the larger Mitsui Group. Founded in 1918, it provides a range of insurance products, including life, property, and casualty insurance. The company operates both domestically in Japan and internationally, serving individuals and businesses. As a key player in the insurance industry, Mitsui Sumitomo focuses on risk management and financial security. It is known for its strong financial stability and commitment to customer service, making it a trusted choice for many clients seeking insurance solutions.