Company History

1935	Established Nakase Kogyo Co.,Ltd. to develop gold,silver,antimony minerals.
1936	Changed company name to Nihon Seiko Co.,Ltd.
1948	Constructed the smelting plant and started manufacturing and sales of antimony trioxide and antimony metal.
1952	Changed sources of raw materials from domestic mines to overseas supplies.
1955	Commenced manufacturing and sales of the catalyst grades of antimony trioxide.
1971	Commenced manufacturing sodium antimonate.
1976	Constructed desulfurration plant and started manufacturing and sales of gypsum.
1982	Started manufacturing and sales of PATOX-L (large particle size) and PATOX-U (small particle size).
1985	Constructed large scale reduction furnace. Celebrated the 50th anniversary of the company.
1986	Constructed large scale metal furnaces to produce PATOX grades.
1988	Increased company's capital to 1,018 million yen.
1991	Introduced automatic packing and storing system.
1992	Built new factory to accommodate the new special surface treatment facility.
1997	Completed new office building at Nakase.
1998	Completed new laboratory at Nakase.
2000	Nippon Atomized Metal Powder Corporation (Noda City, Chiba Prefecture) became a subsidiary of Nihon Seiko through the acquisition of the major portion of that company's issued stock. Nihon Seiko Co.,Ltd. accredited with ISO14001.
2003	Nihon Seiko Co.,Ltd. accredited with ISO9001.  Purchased the antimony business including some plant facilities of Sumitomo Metal Mining Co.,Ltd.
2004	Completed production facilities of high purity antimony trioxide.
2008	Completed acquisition of 100% issued stock of Nippon Atomized Metal Powder Corporation
2009	Completed new technical center at Nakase
2012	Completed Tsukuba Plant, new plant of Nippon Atomized Metal Powder Corporation, in Ibaraki.