|1967 Oct||The establishment of Hirai Seimitsu Kogyo Corp. in Kita-ku, Osaka-shi.|
|1970 May||Ibaraki plant was established in Ibaraki-shi, Osaka.|
|1970 Jul||Wataru Hirai assumed the presidency of Hirai Seimitsu Kogyo Corp.|
|1972 Jun||Osaka Headquarters was moved in Kita-ku Osaka-shi.|
|1977 Nov||Ogaki Plant was established in Ogaki-shi, Gifu.|
|1980 Apr||Yasuhiro Hamada assumed the presidency.|
|1980 Dec||Osaka CAD center was established in Kita-ku,Osaka-shi.|
|1982 Nov||Expansion of Ogaki CAD center.|
|1984 Apr||Expansion of Ogaki factory building 3.|
|1985 Apr||Kyushu branch was opened in Fukuoka.|
|1989 Mar||Kumamoto factory was established in Arao-shi, Kumamoto.|
|1990 Jun||Expansion of Kumamoto factory.|
|1991 Apr||Ogaki factory was remodeled.|
|1992 Oct||Tokyo Branch was opened.|
|1993 Apr||Capital Participation to Joh machining Inc.|
|1997 Sep||Expansion of Kumamoto factory building 3.|
|2005 Dec||New building of Ogaki factory was established.|
|2009 May||The establishment of Chiba Precision Press Inc.|
|2017 Aug||Yasuhiro Hamada assumed office as the chairperson.
Komei Hirai assumed office as the presidency.
|2019 Jan||Osaka CAD center is closed.
Headquarters is newly built and relocated in this area after Osaka CAD center is closed.