Seki Co., Ltd. engages in the printing business. It operates through the following segments: Printing related, Western Paper and Paperboards Sales related, Publishing and Advertising related, Museum related, and Catalog Sales related. The Printing related segment includes publication and commercial print materials, processed packaging products, and newspaper printing. The Western Paper and Paperboards Sales related segment focuses on the sale of Western paper and paperboards. The Publishing and Advertising related segment publishes books and magazines; and operates advertising agencies. The Museum related segment manages galleries and museums. The Catalog Sales related segment sells local specialty and office products from catalogs. The company was founded by Yasushi Seki in July 1908 and is headquartered in Matsuyama, Japan.