| Jan. 1989 |
Established Tsutsumi Seisakusho |
| March 1989 |
Established Limited corporation, Tsutsumi Seisakusho |
| May 1993 |
Started to design/manufacture/sell Silencer for engine (silencer) by the development of coping with noise and environmental problem |
| Jan 1999 |
Moved the main office to new factory (present address) |
| April 1999 |
Changed to the stock corporation from limited corporation |
| June 2000 |
Expanded the factory |
| April 2004 |
Expanded the factory |
| June 2005 |
Installed Pipe Bender CPC-100 |
| Jan. 2006 |
Installed Laser cutting/processing machine LC-2415 α 11 |
| April 2006 |
Built the facility for a noise meter |
| Sept. 2006 |
Increased capital to 10 million Yen |
| Jan. 2007 |
Installed Pipe Bender MB42P, Drying chamber for coating |
| Feb. 2007 |
Installed Urethane Roller |
| May. 2008 |
Installed Spot Welder TY-0201Z5 |
| Aug. 2011 |
Installed Band Saw HFA-250 |
| Oct. 2011 |
Installed Laser cutting / processing Machine LC2415A4NT |
| Sept. 2013 |
Installed Bending Roller PLDL-0513 |
| Aug. 2014 |
Established Tsutsumi Seisakusyo Vietnam Co.,Ltd. |
| Aug. 2011 |
Installed Band Saw HFA-250 |
| Oct. 2011 |
Installed Laser cutting / processing Machine LC2415A4NT |
| Sept. 2013 |
Installed Bending Roller PLDL-0513 |
| Aug. 2014 |
Established Tsutsumi Seisakusyo Vietnam Co.,Ltd. |
