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| 1949 | Heikichi Kubo founded MIYOSHI Manufacturing Company at Ota-ku, Tokyo. |
|---|---|
| Feb.1952 | Incorporated company as Limited Company with investments 35 thousand yen. |
| Mar.1961 | Investments increased to 3.35 million yen. |
| Sep.1961 | Takyo factory begun operation. |
| Mar.1965 | Acquired Wiring Equipment Manufacturing permission. |
| Mar.1967 | Investments increased to 7 million yen. |
| Oct. 1973 | Muroran factory begun operation. |
| May. 1982 | Acquired UL 746D Molder Program(E81098(S)). |
| Feb. 1988 | Takeshi Kubo assumed CEO. |
| Jul. 1988 | Incorporated company as MIYOSHI Mfg. Co., Ltd. |
| Aug. 1988 | Muroran 2nd factory begun operation. |
| Feb. 1992 | Investments increased to 10 million yen. |
| Sep. 1992 | Muroran 3nd factory begun operation. |
| Dec. 1993 | Muroran Factory acquired JIS S2029 ( Japanese Industrial Standards 2029, Plastics Table Wares). |
| Jan. 1994 | Established Shanghai Y.S.P. |
| Sep. 1995 | Established HONG KONG MIYOSHI Mfg. Co., Ltd. |
| Oct. 1995 | Acquired AC motor & electronics-applied equipment manufacturing permission. |
| Mar. 2000 | Yoichi Kubo assumed CEO. |
| Jul. 2002 | Established DALIAN MIYOSHI Mfg Co., Ltd. in Dalian bonded area. |
| Mar. 2004 | Dissolved Shanghai Y.S.P. |
| Mar. 2005 | Dissolved HONG KONG MIYOSHI Mfg. Co., Ltd. |
| Nov. 2006 | Tokyo office relocated to Chiba. |
| Mar. 2008 | Investments increased to 11 million yen. |
| Mar. 2010 | Yoichi Kubo assumed Exective Chairman/ Yukio Kubo assumed President. |
| Nov. 2012 | Established Sapporo office. |
| Feb. 2016 | Yukio Kubo assumed Exective Advisor/Yoshihiro Kawamura assumed President . |
| May. 2016 | Established Tokyo office. |
| Jul. 2016 | Established Osaka office. |
| Apr.2019 | Joined Actys Group. |
| Feb.2020 | Yoshihiro Kawamura assumed CEO. |
| Jun.2020 | Investments increased to 55 million 500 thousand yen. |
| Aug.2020 | Moved the head office to Muroran-shi, Hokkaido |
| Apr.2024 | Kazuki Uoto assumed CEO. |