Corporate History

1947, August Established as Tokyo-Seitei-Jo in Taihei-cho, Sumida-ku Tokyo.
1959, August Moved to Kitasuna-cho, Koutou-ku Tokyo.
1963, April Capital participation by Sumikin-Bussan Co.,Ltd.
1964, October Company name was changed to Tokyo Seisen Co.,Ltd.
Specialized in iron wire and flat wire.
1973, March Partly moved to Ichikawa Factory Area. (No.4 and 5 Factory Buildings) 
1979, June Sold Kitasuna Factory.
Main office and factory all move to Ichikawa area.
2010, March gained ISO9001:2008 certification.
2010, December gained JIS G 3532 (SWM-B、SWM-P、SWM-C) certification.
2013, October The shareholders Sumikin Bussan Co., Ltd. merged with Nippon Steel Trading Co., Ltd., and became Nippon Steel Sumikin Bussan.
2019, April The shareholders Nippon Steel Sumikin Bussan Co., Ltd. changed its name to Nippon Steel Bussan Co., Ltd.