1905	Isoda Metal founded; Started manufacture and sales of bearing alloy in Takanawa, Tokyo.
1912	Reorganized into a limited partnership; Founded Dainippon Alloy Labo in Sugamo, Tokyo.
1920	Reorganized into a joint-stock company; Moved the factory to Osaki, Tokyo.
1931	Started manufacture and sales of white metal bearings applied to automobiles.
1933	Started manufacture and sales of kelmet bearings (copper alloy).
1934	Founded Japan Kelmet Factory Co.; Started manufacture and sales of internal-combustion engine bearings for aircrafts and tanks.
1937	Moved the factory to the current site (484 Yaguchi-cho, Kamata-ku, Tokyo City)
1941	Designated as a factory under the control of three ministries (Army, Navy and Munitions)
1942	Designated as a factory supervised by Transportation Department of Army and Air Force Department of the Army Ministry.
	Designated as an authorized factory (Class 1) based on Article 2, Clause 1 of the National Total Mobilization Act by the Minister of Health & Welfare in April.
	Designated as an authorized factory (Class 1) based on Article 2, Clause 1 of the Labor Adjustment Ordinance by the Minister of Health & Welfare.
1943	Merged Japan Kelmet Factory Co.
1953	Started the kelmet centrifugal casting.
1955	Designated as a JIS Standards certified factory (Certification No. 3960).
	Permitted notation Name: White Metal; JIS No. JISH5401
1959	Proceeded R&D for silver plated bearings and materialized as products.
1961	Started manufacture and sales of 3 layers and 4 layers bearings upon completion of the development.
1966	Completed a new energy saving plating factory that has the leading-edge equipment and the thorough anti-pollution facility.
1971	Completed a new energy saving casting factory that has the leading-edge equipment and the thorough anti-pollution facility.
1980	Started development and application of white metal reinforced alloy “11XXS.”
	Started manufacture and sales of bearings for government organizations.
1981	Introduced an auto continuous sintering furnace for production of sintered copper alloy.
1988	Completed construction of three stories building housing the office, factory and labo at the current place.
2005	Celebrated 100th foundation anniversary.