1918
1946
1950
1973
1990
1996
2008
2009
2010
2012
2014
- 1918
-
Nobuo Ishizaki（First president）
Nobuo Ishizaki founded a shop
（Start of the glass wholesale business） - 1945
- Shop business collapsed due to atomic bomb
- 1946
- Goro Ishizaki inherited the business
- 1950
- Established Ishizaki Glass Honten Co., Ltd.
- 1963
- Opened Ozu Plant for processing of automotive glass
- 1965
- Changed company name to Ishizaki Honten Corporation due to business expansion
- 1970
- Opened Fukuyama Sales Office
- 1973
- Completed the Ishizaki Honten building
- 1982
-
Opened Hofu Tsuruhama Plant
Opened Hofu Sales Office - 1986
-
Started production of automotive mirrors（Hofu）
Established PENSTONE INC.（USA） - 1987
- Established Saijo Ready Mixed Concrete Co., Ltd.
Opened Higashi-Hiroshima Sales Office - 1988
- Takayasu Shirai becomes president
- 1989
- Opened Yano Office
- 1990
-
Opened Hofu Shintsukiji Plant
Opened Iwakuni Service Center - 1991
-
Opened Hiroshima Plant Yano（Closed Ozu Plant）
Parallel establishment of Research and Development Center
Established Nishi-Nihon Modular Window Co., Ltd. - 1994
- Shinzo Ishizaki becomes president
- 1995
- Opened Higashi-Hiroshima Service Center（integrated with Higashi-Hiroshima Sales Office）
- 1996
- Merged headquarters Building Materials Division with Hiroshima Plant Yano
- 1997
- Established Window System Co., Ltd.（Started pair multi-production）
- 1998
- Completed the Ishizaki Honten building（80th anniversary）
- 2000
- Provided capital investment for Shimane Sheet Glass Sales Co., Ltd.
- 2003
- Opened NI AUTOWINDOW SYSTEMS INC.（USA）
- 2006
- Merged with Shimane Sheet Glass Sales Co., Ltd.
- 2007
- Opened Okayama Sales Office
- 2008
-
Closed Higashi-Hiroshima Service Center
Opened Toyohashi Office - 2009
- Established Krishna Ishizaki Auto Limited GURGAON PLANT（India）
- 2010
-
Opened Plant No.2, Toyohashi Office.
Established PENSTONE（THAILAND）CO., LTD.
Withdrew from NI AUTOWINDOW SYSTEMS INC.（USA）. - 2011
- Opened Kanto Sales Office.
- 2012
- Established FORWARD AUTO PARTS INC.（China）.
- 2014
- Established PT. PENSTONE AUTO INDONESIA（Indonesia）.
- 2016
- Established PENSTONE MEXICANA, S.A. de C.V.（Mexico）.
- 2017
- Closed PENSTONE INC.（USA）.
- 2018
-
Merged with Window System Co., Ltd.
Opened Hofu Shintsukiji Mirror Plant
Established Krishna Ishizaki Auto Limited GUJARAT PLANT（India）. - 2020
- Established PENSTONE USA, INC.（USA）.
- 2021
- Taijiro Ishizaki becomes president
- 2022
- Established Ishizaki Holdings Corporation Established Penstone Corporation,
Ishizaki Honten Corporation, Ishizaki Co., Ltd.