| Jan. 1937 | Established by the name of Kyushu Precise Machinery Works and started manufacture of machinery parts. |
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| Dec. 1937 | Constructed forging shop,fabrication shop and machining shop newly and started operation. |
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| Mar. 1949 | Started manufacturing various flanges. |
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| Nov. 1953 | Changed the company name to Minato Mechanical Engineering Co.,Ltd. |
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| Jun. 1969 | Entered the Yubaru Industrial Park and constructed new equipment for the forging and machining department. |
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| Jul. 1978 | The head office and Kurosaki factory were integrated into the Yubara factory to establish an integrated production system from forging to machining. |
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| Feb. 1991 | Introduced φ2600 ring rolling mill and φ4000 NC Vertical lathe |
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| Mar. 1996 | Introduced the 1500TN hydraulic forging press and 20 ton Heat treatment furnace. |
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| Mar. 1997 | New head office building was completed. |
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| Apr. 2001 | Introduced the heating furnace for aluminum, started the forging of aluminum. |
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| Apr. 2003 | Started operation of Nogata factory. |
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| Oct. 2003 | Expanded aluminum heating furnace at Main factory. |
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| Mar. 2006 | Converting all heating furnaces at Main factory to natural gas furnaces through energy conversion business. |
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| Mar. 2007 | Acquired the certification of the ISO9001:2000. |
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| Sep. 2010 | Introduced φ3000 NC turning center at Main factory. |
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| Mar. 2014 | Introduced PCSAW530 at Main factory. |
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| Jan. 2015 | Introduced 2000TN Hydraulic press, 5TN Heat treatment furnace, High-performance cooling water pool at Main factory. |
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| Jan. 2016 | Introduced 10TN Heat treatment furnace at Main factory. |
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| Mar. 2016 | Introduced PCSAW720 at Main factory. |
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| Jan. 2018 | Introduced 1000TN Hydraulic press at Nogata factory. |
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| Jan. 2019 | Converting all heating furnaces at Nogata factory to natural gas furnaces through energy conversion business. |
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| Mar. 2019 | Introduced PCSAW720 at Main factory. |
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| Apr. 2020 | Introduction of the latest in-house production management system. |
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| Mar. 2021 | Acquired the certification of the ISO14001:2015. |
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| Sep. 2022 | MKF Holdings made KENSAGIKEN Co., Ltd. a wholly owned subsidiary. |
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| 2023 | Expanded aluminum heating furnace at Main factory. |
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