April 1, 1922 Tomekichi Ito, Founder and First President, establishes "Itoh Chuzo-sho" (Itoh Foundry) in Naka-ku (presently Showa-ku), Nagoya, Japan.
June 1, 1934 "Itoh Dozoku Co., Ltd." established in Naka-ku(presently Showa-ku), Nagoya, Japan.
October 26, 1938 Itoh Dozoku Co., Lted. changed company name to "Itoh Dozoku Industrial Co., Ltd."
August 1, 1940 Company name changed to "Itoh Kikoh Co., Ltd." and the headquarters relocated to Showaku, Nagoya, Japan.
July 7, 1943 Headquarters relocated to 1, Naruhama-cho 5-chome, Minami-ku, Nagoya, Japan (former headquarters address).
June 1961 Start full-scale production of Steel Shot and Steel Grit by 3-ton Arc Furnace.
November 1961 Install High Frequency Induction Furnace of 150kg/300kg - 167kVA and started production of High-Alloy Cast Products
November 29, 1968 Capital increased to 32,000,000JPY.
February 1, 1969

Start production of Centrifugal-type Surface Treatment Machine and Shot Blast Machine.

March 17, 1970 Complete a Steel Mill Facility in Chita Plant for mass production of Steel Shot and Steel Grit.
April 1, 1970 Capital increased to 100,000,000JPY, accepting investment from Nagoya Small and Medium Business Investment & Consultation Co., Ltd. and Daido Steel Co., Ltd.
December 1, 1972 Install Low Frequency Induction Furnace of 1,000kg - 450kVA for mass production of Abrasive-Resistant Cast Products and Heat-Resistant Cast Steel Products.
November 5, 1974 Execute Technology Partnership Contract with Alfred Goodman, West Germany (presently Germany) regarding Shot Blast Machine
August 1, 1985 Build a Foundry of Itohseiko Corporation and Test Center in Chita Plant.
April 18, 1988 Establish a joint venture "Siam IKK Co., Ltd."(presently "WINOA(THAILAND)LTD.") in Samutprakarn, Thailand (suburb of Bangkok).
September 1, 1991 Complete a new foundry in Chita Plant
January 22, 1992 Win The Medium and Small Business Research Institute Award (District Prize).
April 1, 1993 Roll out Contract Shot Peening Processing service.
August 1, 1994 Install 3units of High Frequency Induction Furnace for Shot production.
April 3, 1995 Establish "IKK Tohoku Co., Ltd." in Esashi City, Iwate Pref. (presently Esashi ward of Oshu City).
October 1, 1997 Spin off Shot manufacturing department to establish "IKK Shot Co., Ltd."(presently "WINOA IKK JAPAN CO., LTD.")
March 23, 1998 Build a new factory for Machinery Division in Chita Plant.
November 20, 1998 Build Headquarters Office Facility in Chita Plant.
July 12, 2001 Obtain ISO 14001 Certification.
October 20, 2003 Establish "IKK (Dalian) Co., Ltd." in Dalian City, Liaoning Province, China.
September 8, 2005 Obtain ISO 9001 (Automotive-related Parts) Certification.
June 8, 2007 Completed new factories (foundry, machine factory and plate working factory) in the facility of IKK (Dalian) Co., Ltd.
July 29, 2009 Obtain ISO 9001 (Steel Beads) Certification.
January 29, 2010 Establish "IKK (Tianjin) Co., Ltd." in Tianjin, China.
February 18, 2014 Establish "IKK Service Asia Co., Ltd." in Bangkok, Thailand.
August 26, 2014 Obtain ISO 9001 (Casting Accessories, Welding Products) Certification.
June 1, 2022 The 100th anniversary of its foundation.