Background
Seiko was born in 1898, in Osaka, Japan.
Seiko was born in 1898, in Osaka, Japan.
He graduated from Postgraduate Course of Tokyo University of Commerce in 1922.
He entered Sumitomo Goshi Hiryo Seizo Kaisha (Joint- Stock Fertilizer Manufacturing Company).
Then he inspected chemical industry and fertilizer industry in Europe and America in 1935.
Became director of Business Department of Sumitomo Aluminum Refining Company in 1940 and then served as executive of various industrial companies and thereafter became president of Chuo Steamship Company.