1954

Hara iron Works Company was established in Ichinomiya Aichi, Japan by Founder, Terumichi Hara.

1967

Ryoki Tool Company was separated from Hara Iron Works, and became independent.

1971

Press dies production starts.

1991

Head office and factory was relocated to its present site

1994

Aluminum aircraft parts and aerospace tooling production starts.

1996

5 axis mill machine was introduced.

1998

Large-sized 5 axis mill machine was introduced. (11,300×4,200×4,000mm)

2004

Dedicated inspection shop completed; starts operations.

2005

Invar tool production starts.

2007

Sales branch established in Utsunomiya Tochigi, Japan.

2008

Completed inspection shop expansion.

2009

ISO 9001 certification.

2010

JIS Q 9100 (AS9100) certification.

2013

Ryoki Tool Company merges Hara Iron Works.

2014

Completed Inazawa factory expansion and additional two of large-sized 5 axis mill machine was introduced. (15,500×4,700×3,500mm)
Given award as quality tooling supplier from Toyota industries corporation.