No.1 Co.,Ltd sells and maintains OA and information security equipment. The company's products include copiers and multifunction machines, business phones, network security products, and file servers. It also engages in the sale and maintenance of communication equipment; line and mobile sales, and related agency business; mail-order agency business related to office equipment and services; internet-related business; and advertising agency business. The company was incorporated in 1989 and is headquartered in Tokyo, Japan.