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 sales agent contract with Mitsubishi Electric Corporation is concluded.
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| 1948 | Tachibana Shokai Ltd. is established. |
| 1957 | The Tokyo Office (now under the name East Japan Branch Office) is established.
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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 (now under the name Middle Japan Branch 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 (now under the name East Japan Branch 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. |
| 2022 | The Nagoya Office (now under the name Middle Japan Branch Office) is moved. April 1, 2022 The company is listed in the Prime Market of the Tokyo Stock Exchange The Okayama Sales Office is established. |