Japan Post Holdings Co., Ltd. (日本郵政株式会社, Nippon Yū-sei Kabushiki-gaisha) is a Japanese publicly traded conglomerate headquartered in Kasumigaseki, Chiyoda, Tokyo. It is mainly engaged in postal and logistics business, financial window business, banking business and life insurance business. The company offers letters and goods transportation services, stamp sales, deposits, loans, and insurance products.[5][6]