Sumitomo Corporation is one of the largest worldwide sōgō shōsha general trading companies, and is a diversified corporation. The company was incorporated in 1919 and is a member company of the Sumitomo Group. It is listed on three Japanese stock exchanges and is a constituent of the TOPIX and Nikkei 225 stock indices. Today, the company is one of the top three sōgō shōsha companies in the world. Wikipedia