| 1958 |
June |
Established TOITU Optical Electronics Co., Ltd. in Hatsune-cho, Bunkyo-ku, Tokyo |
| 1960 |
January |
Moved to Udagawa-cho, Shibuya-ku |
| 1962 |
April |
Established TOITU Kogyo Co., Ltd. in Kosugi, Kawasaki City as a manufacturing division (Kosugi Factory) |
| 1963 |
October |
As a specialized manufacturing department for OB-GYN suction devices, the Hirama branch factory was opened in Hirama, Kawasaki City |
| 1964 |
April |
Moved the head office to its current location, Ebisu, Shibuya-ku |
| 1966 |
July |
Relocated TOITU Kogyo Co., Ltd.(Kosugi Factory) from Kosugi, Kawasaki City to Chitose Shincho in the same city (Shinjo Factory). |
| 1969 |
August |
Company name changed to TOITU Co. Ltd. |
| 1970 |
March |
Constructed a new building for TOITU Kogyo Co., Ltd. in Tsunashima, Yokohama City (Tsunashima Factory) and integrated the Hirama Branch Factory into it |
| 1980 |
October |
TOITU Kogyo (Tsunashima Factory) received an award as an excellent factory in Kanagawa Prefecture. |
| 1981 |
June |
New head office building (6 floors) completed at current location |
| 1984 |
April |
Expanded Toichi Kogyo (Tsunashima Factory) to 5 floors |
| 1986 |
July |
TOITU Service Center opened in Shanghai, People’s Republic of China. |
| 1986 |
November |
TOITU heart rate fetal movement recording device MT-320 won Kanagawa Prefecture Industrial Technology Development Award |
| 1987 |
November |
Established TOITU of America in Pennsylvania, USA. |
| 1990 |
February |
TOITU Co., Ltd. merged with TOITU Kogyo Co., Ltd. |
| 1998 |
January |
Head Office and Tsunashima Factory obtained Repair Business License |
| 1998 |
September |
Head office/Tsunashima Factory obtained ISO9001/EN46001 registration certification |
| 2003 |
September |
Head office/Tsunashima Factory obtained ISO9001/ISO13485 registration certification |
| 2005 |
February |
Obtained first-class medical device manufacturing and sales license |
| 2008 |
August |
Head office/Tsunashima Factory obtained ISO9001/ISO13485:2003 registration certification |
| 2009 |
June |
Head office/Tsunashima Factory obtained ISO9001:2008 registration certification |
| 2009 |
September |
Reconstructed Tsunashima Factory |
| 2015 |
November |
Tsunashima Factory obtained ISO/IEC 27001:2013/JIS Q 27001:2014 registration certification |
| 2019 |
August |
Head office/Tsunashima Factory obtained ISO13485:2016 registration certification |
| 2024 |
May |
TOITU Core Center and Tokyo metropolitan sales office opened |
