1805 Heishiro Kumanoya moves to Osaka from Toyama to establish Kumanoya in Senba, which deals with the trade of paints, dyeing grasses, paint brushes, and India ink. 1873 Kumanoya is renamed Ichirobei Yamada Shoten. 1877 Cotton trade is started with the former British India, Annam, and the former Dutch India 1912 Ichitaro Yamada Shoten becomes Yamada&Co. 1917 Yamada Shoten Co.,Ltd. is established with the capital of 1 million Yen, which becomes the exclusive agency in Japan of Non Fluid・Oil Co of the United States. 1924 Yamada Shoten Co.,Ltd. becomes the exclusive agency in Japan of I.G. Dye company of Germany. 1927 Yamada Shoten Co., Ltd. becomes the special agent of Nippon Senryo Seizo Co.,Ltd. (Today’s Sumitomo Chemical Co.,Ltd. ) 1928 Yamada Shoten Co.,Ltd. becomes the special agent of Edogawa Kogyo&Co.,Ltd. (Today’s MITUBISHI GAS CHEMICAL COMPANY, INC.) and DAI-ICH KOGYO SEIYAKU CO.,LTD. 1931 Yamada Shoten Co.,Ltd. becomes the special agent of Asahi Glass CO.,LTD. 1944 With the merger of Nippon Senryo Seizo Co.,Ltd. and Sumitomo Chemical Co.,Ltd.,Yamada Shoten Co.,Ltd. becomes the special agent of Sumitomo Chemical Co.,Ltd.. 1965 The construction of “SEIHO Building” is completed. This name derives from the Saigokubashi(in another reading in Japanese “SEIHO”) bridge (the base of the trade in the Western Japan) spauned the Yokobori river. 1970 Tokyo branch office is set up. 1971 With the merger of Mitubishi Edogawa Chemical Co.,Ltd. and Nippon Gas Chemical Co.,Ltd.,Yamada Shoten Co.,Ltd. becomes the special agent of the new MITUBISHI GAS CHEMICAL COMPANY, INC. 1973 The capital of Yamada Shoten Co.,Ltd. is increased to 10 million Yen. 1974 Yamada Shoten Co.,Ltd. is renamed SEIHO LTD. 1994 SEIHO LTD. becomes the special agent of Mitubishi Engineering Plastic Corporation. 1997 The capital of SEIHO LTD. is increased to 30 million Yen. 2000 The capital of SEIHO LTD. is increased to 50 million Yen. 2005 A party of appreciation is held to commemorate the company’s 200th anniversary since its foundation.