Jun 1966
| Established in Chiyoda-Ku,Tokyo.Commenced dealing in various connectors. |
April 1967
| Office established in Shibuya-Ku,Tokyo.Created a wire harness division. |
August 1968
| Established Hero Electric Co., Ltd. with capital of 6 million yen. |
April 1969
| A full scale entry into the car repair industry and development of simplecrimp tools for car repair purpose. |
Nobember 1970
| Head office transferred to Ebisu, Shibuya-Ku, Tokyo. |
Octorber 1972
| Development of crimp type battery terminal and specific tools. |
June 1975
| Increased capital to 12 million yen. |
December 1978
| Increased capital to 30 million yen. |
August 1980
| Established a manufacturing division in Kawayanagi-Cho, Koshigaya-Shi,
Saitama. Transferred stamping division and wire harness division. |
August 1983
| Established a progressive die division. |
March 1985
| Acquired Koshigaya industrial site at Mashimori, Koshigaya-Shi, Saitama Commenced construction of new Saitama factory. |
January 1988
| New Saitama factory construction completed. Transferred press processing division and die division. |
December 1988
| Commenced manufacture and sales of plate type battery terminal. |
December 1989
| Business consolidation of Kawayanagi manufacturing division with theopening of the Saitama factory. |
March 1990
| Development of simple crimp tools used for sealed connector/terminal and commencement of its manufacture and sales. |
March 1991
| Development and installation of automatic counting/packing machine andsubsequent change to an automatic packing format. |
March 1998
| Development and installation of automatic packaging machine capable of packing multiple products. |
March 1999
| Transfer and concentration of the head office function from Ebisu,Shibuya-Ku, Tokyo to Saitama factory for the purpose of constructing a unifyingstructure of manufacture and sales. |
May 2003
| Adoption and installation of an automatic soldering (brazing) Unit 1 machine for plate type battery terminal purpose. |
March 2015
| Adoption and installation of an automatic soldering (brazing) Unit 2 machine for plate type battery terminal purpose. |
February 2018
| Increased capital to 51 million yen. |