History
| 1962 | April | Founded as Kanji Wajima’s private company. |
|---|---|---|
| 1979 | August | Restructured as Osaka Trading Co., Ltd., with a capital investment of 40 million yen. |
| 1997 | October | Opened the 1st Warehouse. |
| 2000 | September | Acquired Basel Method certification. |
| 2001 | January | Kunihiro Fujita appointed as company president. |
| September | Head office building completed. | |
| 2003 | October | Acquired ISO14001 certification |
| December | Issued new-share subscription-rated bonds underwitten by the Osaka Small and Medium Business Investment & Consultation Corporation. | |
| 2004 | February | Increased capital to 60 million yen. |
| 2005 | July | 1st Warehouse completed (OSAKA) |
| 2006 | April | Establish Tokyo Branch(located to warehouse) |
| August | Corporate name was changed to METAL DO CO., LTD. | |
| November | Increased capital to 67.25 million yen. | |
| 2007 | April | Increased capital to 199.8 million yen. |
| May | Increased capital to 209.8 million yen. | |
| 2008 | February | Increased capital to 262.968 million yen. Established general hazardous meterial facility and indoor hazardous material storage. |
| 2009 | January | 2nd Warehouse completed. (KOBE) |
| 2010 | June | 1st Warehouse permitted as Bonded Area |
| 2011 | September | Tokyo Branch opened (located to warehouse) |
| November | Capital reduction to 98 millon yen | |
| 2013 | May | Toshihiko Yamatsura appointed as company president. |
| 2014 | November | Acquired ISO9001 certification |
| 2017 | July | Head office relocated to Osaka Naniwa-ku. Tokyo branch, Tokyo ware house relocated to Tokyo Ota-ku. |
| 2019 | June | Agreed capital and business alliance with TOYOTA TSUSHO MATERIAL INCORPORATED. |
| 2023 | September | Establish Nishiyodogawa Warehouse. |