History
| April 1, 1922 | Tomekichi Ito, Founder and First President, establishes "Itoh Chuzo-sho" (Itoh Foundry) in Naka-ku (presently Showa-ku), Nagoya, Japan. |
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| 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." 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." |
| 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. |