| date | outline |
|---|---|
| April,1948 | Established Osaka liaison office at Osaka City of Osaka Prefecture（Promoted branch office in 1961) |
| April,1959 | Established Nagoya liaison office at Nagoya City of Aichi Prefecture |
| April,1963 | Listed on the Second Market of the Tokyo Stock Exchange Established Technological Center at Yokohama City of Kanagawa Prefecture |
| September,1977 | Capital invested by Toyota Motor Corp , and be related company |
| April,1980 | Merged with MATOCO Kogyo Co.,Ltd. and Dowa Kogyo Co., Ltd Moved Headquarters to Nagoya City of Aichi Prefecture |
| July,1980 | Renamed Company name to Trinity Industrial Co.,Ltd Renamed Technological Center to Tokyo Branch Office Moved Osaka Branch Office to Toyonaka City of Osaka Prefecture |
| April,1983 | Moved Headquarters to Kakimoto Town , Toyota City of Aichi Prefecture |
| September,1983 | Started producting auto facilities at Shimoichiba , Toyota City of Aichi Prefecture |
| July,1986 | Constructed Head Office Plant at Katsurano Town,Toyota City of Aichi Prefecture , and moved automobile parts division and operating coating facilities division |
| October,1999 | United Tatebayashi Plant and Gifu Plant to Head Office Plant |
| August,2000 | Changed Tokyo Registered Office's address , from Chiyoda ward of Tokyo Prefecture to Yokohama city of Kanagawa Prefecture |
| July,2006 | Renamed Head Office Plant to Toyota Plant |
| May,2007 | Constructed Miyoshi Plant at Miyoshi Town , Nishikamo-gun of Aichi Prefecture and started producting exterior facilities |
| January,2008 | Changed Tokyo Registered Office's address , from Tsurumi ward of Yokohama city to Kouhoku ward of Yokohama city |
| August,2010 | Changed Tokyo Registered Office's address , from Kouhoku ward of Yokohama city to kakimoto Town , Toyota City of Aichi Prefecture |
