| 1932 |
1932: Founded as Tsuzuki Shoten in Nagoya (mainly engaged in telecommunications equipment construction centered on telephones) |
| 1932 |
Founded as Tsuzuki Shoten in Nagoya. Started installing and maintaining telephone exchange equipment as a Fuji Electric dealer. Recognized that communication facilities are vital infrastructure for the national economy, and aimed to contribute to public works by enhancing their utilization. |
| 1932 |
Founded as Tsuzuki Shoten in Nagoya (mainly engaged in telecommunications equipment construction including telephone lines). |
| 1941 |
1941: Reorganized into a corporation, became Tsuzuki Telephone Industry Co., Ltd. |
| 1941 |
Changed company name to Tsuzuki Telephone Industry Co., Ltd. Expanded from a 'telephone shop' to a company with three pillars: sales, manufacturing, and construction, and reorganized into a stock company with a new name. |
| 1941 |
Reorganized into Tsuzuki Telephone Industry Co., Ltd. |
| 1945 |
1945: Headquarters building burned down in air raid; moved headquarters to Tokyo (Den-en-chofu, Ota Ward) |
| 1945 |
The headquarters building was completely burned down in an air raid. Established a temporary office in Tokyo. |
| 1945 |
The headquarters building was completely destroyed by air raid; headquarters moved to Tokyo (Ota Ward, Den-en-chofu). |
| 1947 |
1947: Moved headquarters (Koyamada, Shinagawa Ward); opened Osaka branch office (now Osaka Office) |
| 1947 |
Headquarters moved to Shinagawa Ward, Koyamadai; Osaka branch office (now Osaka Office) opened. |
| 1949 |
1949: Opened Sapporo branch office (now Sapporo Office) |
| 1949 |
Sapporo branch office (now Sapporo Office) opened. |
| 1954 |
1954: Opened Nagoya branch office (now Nagoya Office) |
| 1954 |
Nagoya branch office (now Nagoya Office) opened. |
| 1958 |
1958: Started sales of computers, related equipment, and parts |
| 1958 |
Started selling computers and related parts under a dealership agreement with Fuji Tsushinki Manufacturing (now Fujitsu). Established Toshin Denki Co., Ltd. (later Tsuzuki Densan Co., Ltd.) as a sales company for semiconductors and electronic components. |
| 1958 |
Established TOSHIN DENKI Co., Ltd., which sells mechanical parts and semiconductors (later Tsuzuki Denki Co., Ltd.). |
| 1958 |
Established Tsuzuki CE Center Co., Ltd. to strengthen total service system for computer sales. |
| 1958 |
Established Tsuzuki Software Co., Ltd. (Mini Computer) in response to the increasing importance of software due to technological innovation and proliferation of computers. |
| 1958 |
Established Tsuzuki Air Conditioning Co., Ltd. (now Tsuzuki Cross Support Co., Ltd.). |
| 1958 |
Started selling computers, related equipment, and parts. |
| 1958 |
Established Tsuzuki C.E. Center Co., Ltd. (now Tsuzuki Techno Service Co., Ltd.) to strengthen total service system for computer sales. |
| 1961 |
1961: Changed company name to Tsuzuki Electric Industry Co., Ltd.; moved headquarters (Azabu, Minato Ward) |
| 1961 |
Renamed to Tsuzuki Denki Co., Ltd.; headquarters moved to Azabu, Minato Ward. |
| 1962 |
1962 : 本社移転（港区新橋） |
| 1962 |
本社移転（港区新橋） |
| 1963 |
1963: Registered shares on the over-the-counter market of the Japan Securities Dealers Association |
| 1963 |
Registered shares over-the-counter with the Japan Securities Dealers Association. |
| 1964 |
1964: Opened Yokohama branch office (now Yokohama Office); moved headquarters (Hamamatsucho, Minato Ward) |
| 1964 |
Yokohama branch office (now Yokohama Office) opened; headquarters moved to Hamamatsucho, Minato Ward. |
| 1967 |
1967: Established Tohshin Electric Co., Ltd. (later Tsuzuki Electric Tansha Co., Ltd.); established Tsuzuki Service Co., Ltd. (now Tsuzuki Cross Support Co., Ltd.) |
| 1967 |
Established Toshin Denki Co., Ltd. (later Tsuzuki Denki Co., Ltd.); established Tsuzuki Service Co., Ltd. (now Tsuzuki Cross Support Co., Ltd.). |
| 1969 |
1969: Established Tsuzuki C.E. Center Co., Ltd. (now Tsuzuki Techno Service Co., Ltd.); opened Fukuoka branch office (now Fukuoka Office) |
| 1969 |
Established Tsuzuki CE Center Co., Ltd. (now Tsuzuki Techno Service Co., Ltd.); opened Fukuoka branch office (now Fukuoka Office). |
| 1970 |
1970: Established Tsuzuki Software Co., Ltd. |
| 1970 |
Established Tsuzuki Software Co., Ltd. |
| 1972 |
1972: Moved headquarters (Fujita Kanko Building, Kaigan, Minato Ward) |
| 1972 |
Headquarters relocation (Minato Ward, Kaigan, Fujita Kanko Building) |
| 1974 |
1974: Moved headquarters (Takeshiba Building, Kaigan, Minato Ward) |
| 1974 |
Headquarters relocation (Minato Ward, Kaigan, Takeshiba Building) |
| 1981 |
1981: Established OA Business Division |
| 1981 |
Establishment of OA Business Division |
| 1986 |
1986: Listed on the Second Section of the Tokyo Stock Exchange |
| 1986 |
Listed on the Tokyo Stock Exchange Second Section |
| 1987 |
1987 : 本社移転（品川区大崎） |
| 1987 |
本社移転（品川区大崎） |
| 1988 |
1988: Became a system integrator certified by the Ministry of International Trade and Industry |
| 1988 |
Becoming a system integrator certified by the Minister of Economy, Trade and Industry |
| 1991 |
1991: Changed company name to Tsuzuki Electric Co., Ltd. |
| 1991 |
Renamed to Tsuzuki Electric Co., Ltd. |
| 1994 |
1994: Established a local subsidiary in Singapore: TSUZUKI DENSAN SINGAPORE PTE.LTD. |
| 1994 |
Established a local subsidiary in Singapore. |
| 1994 |
Established a local subsidiary in Singapore: TSUZUKI DENSAN SINGAPORE PTE.LTD. |
| 1995 |
1995 : 本社移転（品川区小山） |
| 1995 |
本社移転（品川区小山） |
| 1997 |
1997: Established a local subsidiary in Hong Kong: Tsuzuki Densan Hong Kong Limited |
| 1997 |
Established a local subsidiary in Hong Kong. |
| 1997 |
Established a local subsidiary in Hong Kong: Tsuzuki Densan Hong Kong Limited |
| 2001 |
2001: Obtained ISO 9001 certification |
| 2001 |
Obtained ISO 9001 certification |
| 2004 |
2004 : 本社移転（港区新橋） |
| 2004 |
本社移転（港区新橋） |
| 2005 |
2005: Obtained ISO 14001 certification |
| 2005 |
Obtained ISO 14001 certification |
| 2006 |
2006: Established a local subsidiary in Shanghai: Tsuzuki Densan Trading (Shanghai) Co., Ltd. |
| 2006 |
Established a local subsidiary in Shanghai. |
| 2006 |
Divested the electronic device business and established Tsuzuki Embedded Solutions Co., Ltd. |
| 2006 |
Established a local subsidiary in Shanghai: Tsuzuki Densan Trading (Shanghai) Co., Ltd. |
| 2006 |
Divested the electronic device business and established Tsuzuki Embedded Solutions Inc. |
| 2011 |
2011: Made Next Vision Co., Ltd. a subsidiary: Currently merged with Tsuzuki Software Co., Ltd. |
| 2011 |
Made Next Vision Co., Ltd. a subsidiary: *: Currently merged with Tsuzuki Software Co., Ltd. |
| 2012 |
2012: Merged with Tsuzuki Densan Co., Ltd. |
| 2012 |
Merged with Tsuzuki Densan Co., Ltd. |
| 2016 |
2016: Announced new management philosophy and new logo mark |
| 2016 |
Announced new management philosophy and new logo mark |
| 2017 |
2017: Capital and business alliance with Asao Co., Ltd. |
| 2017 |
Capital and business alliance with Asao Co., Ltd. |
| 2018 |
2018: Certified as a Health & Productivity Management Organization by the Ministry of Economy, Trade and Industry (ongoing); Changed industry classification at Tokyo Stock Exchange from 'wholesale' to 'information and communication' |
| 2018 |
Certified as a health management excellent corporation by the Ministry of Economy, Trade and Industry (ongoing): Changed industry classification at Tokyo Stock Exchange from "wholesale" to "information and communication" |
| 2020 |
2020: Listed on the First Section of the Tokyo Stock Exchange; Acquired Comdesign Co., Ltd. |
| 2020 |
Designated on the First Section of the Tokyo Stock Exchange: Acquired subsidiary C-Design Co., Ltd. |
| 2021 |
2021: Spun off the electronic device business; Established Tsuzuki Embedded Solutions Co., Ltd. |
| 2021 |
Divested the electronic device business, established Tsuzuki Embedded Solutions Co., Ltd. |
| 2022 |
2022: Certified as a DX-certified business by the Ministry of Economy, Trade and Industry; Transitioned to the Prime Market of the Tokyo Stock Exchange; Established a purpose and refreshed management philosophy |
| 2022 |
Certified as a DX-certified business by the Ministry of Economy, Trade and Industry: Transitioned to Prime Market of Tokyo Stock Exchange: Established purpose, renewed management philosophy |
| 2024 |
2024: Transferred shares of Tsuzuki Embedded Solutions Co., Ltd., Tsuzuki Densan Trading (Shanghai) Co., Ltd., Tsuzuki Densan Hong Kong Limited, and TSUZUKI DENSAN SINGAPORE PTE.LTD. to Laster Holdings Co., Ltd. |
| 2024 |
Tsuzuki Embedded Solutions Inc., Tsuzuki Densan Trading (Shanghai) Co., Ltd., Tsuzuki Densan Hong Kong Limited, and Tsuzuki Densan Singapore PTE. LTD. transferred their shares to Laster Holdings Co., Ltd. |
| 2032 |
Continuing to challenge the creation of new value toward the 100th anniversary of founding. |
