1912 - 1926
| 1921 | Norimitsu Tachibana founds Tachibana Shokai as a private business, wholesaling electric products and providing electric installation services.
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| 1925 | A sales agent contract with Mitsubishi Corporation is concluded.
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1926 - 1989
| 1947 | The contract with Mitsubishi Corporation is terminated and a contract with Mitsubishi Electric Corporation is concluded.
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| 1948 | Tachibana Shokai Ltd. is established. |
| 1957 | A sales agent contract with Mitsubishi Corporation is concluded.
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| 1961 | The Sakai Office (now under the name South Osaka Office) is established.
The head office is relocated to Nishi Ward of Osaka. The Nagoya Office is established. 
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| 1962 | The contract with Mitsubishi Electric Corporation is revised to the status of an agency agreement. |
| 1963 | The Kobe Office is established.
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| 1966 | The Machida Office (now under the name Kanagawa Office) is established.
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| 1974 | The Company obtains a license as a general constructor, authorized by the Ministry of Construction.
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| 1981 | The Hokuriku Office is established. |
| 1982 | The Singapore Office is established.
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| 1985 | The Osaka Software Center is established.
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| 1986 | The Company issues an IPO as a listed company in the New 2nd Section of the Osaka Securities Exchange Market.
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| 1988 | The Hong Kong Office is established. |
1989 - 2019
| 1990 | The Company is upgraded to the 2nd Section of the Osaka Securities Exchange Market. |
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| 1994 | The company relocates to a newly built head office.
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| 1997 | Tachibana Sales Taiwan Co., Ltd. is established.
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| 2001 | June: ISO14001 is acquired.
Sept.: The Company is rebranded as Tachibana Eletech Co., Ltd. |
| 2002 | Tachibana Sales Shanghai Ltd. is established.
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| 2004 | March 4, 2004
The Company is listed in the 2nd Section of the Tokyo Stock Exchange. |
| 2005 | March 1, 2005
The Company is listed in the 1st Section of the Tokyo Stock Exchange and in the 1st Section of the Osaka Securities Exchange. |
| 2006 | The Company acquires information security management system ISMS certification.
November 2, 2006: The Company invests in Daidensha Co., Ltd. |
| 2007 | Tachibana Sales Korea Ltd. is established.
Tachibana Sales Bangkok Co., Ltd. is established. Tachibana Overseas Holdings is established as a regional head-office. 
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| 2008 | March 2008
A new building is built to house the South Osaka Office and the employee training center (Rishikan and Ningendojo). 
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| 2010 | The Company acquires Daidensha Co., Ltd. as a wholly owned subsidiary.
The Beijing Office and the Shenzhen Office are established. 
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| 2011 | The Wuhan Office is established.
The Company celebrates the 90th anniversary of its founding. 
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| 2012 | Tachibana Overseas Holdings Ltd. is established.
The Dalian Office is established. The Company invests in Takagi Co., Ltd., and Tachibana Device Component Co., Ltd. is established. 
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| 2013 | The Malaysia Office is established.
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| 2014 | Tachibana Sales Indonesia is established.
The Qingdao Office is established. The Tokyo Office is moved to a company-owned building. The Company acquires Takagi Co., Ltd. as a consolidated subsidiary. 
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| 2015 | The Company starts the medium to long term management plan “C.C.J2200.” |
| 2019 | The Company acquires Takagi Co., Ltd. as a wholly owned subsidiary.
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2019 - Present
| 2020 | Tachibana Sales Malaysia Sdn. Bhd is established.
The Company acquires Tachibana Electronic Solutions Co., Ltd. as a wholly owned subsidiary. |
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| 2021 | The company celebrates the 100th anniversary of its founding. |