| 1973 |
April |
Established Sumisho Osaka Nonferrous Metal Sales Corporation with its capital of 30 million yen.
|
| November |
Changed the company name to Sumisho Nonferrous Sales Corporation. Opened Tokyo Branch Office. |
| 1976 |
May |
Moved its head office to Tokyo, and changed the Osaka office to Osaka Branch Office (now Kansai Branch).
|
| 1977 |
January |
Opened Nagoya Branch Office (now Chubu Branch).
|
| 1978 |
February |
Increaｓed capital to 100 million yen.
|
| December |
Opened Kyushu Sub-Branch Office (closed in March 2020). |
| 1979 |
October |
Opened Sendai Sub-Branch Office (closed in September 2006).
|
| 1980 |
April |
Opened Niigata Sub-Branch Office (closed in June 2023).
|
| October |
Opened Hiroshima Sub-Branch Office (now Hiroshima Office). |
| December |
Increased capital to 200 million yen. |
| 1988 |
January |
Changed the company name to Sumisho Metalex Corporation.
|
| 1990 |
February |
Opened Singapore Branch Office (closed in March 1999)
|
| September |
Opened Hokkaido Sub-Branch Office (closed in March 2018) |
| December |
Increased capital to 600 million yen. |
| 1992 |
July |
Opened Kanto Distribution Center (closed in October, 2006)
|
| October |
Moved the head office to Kanda Ogawamachi, Chiyoda-ku, Tokyo |
| 1998 |
March |
Increased capital to 829.8 million yen by allocatiing new shares to third parties.
|
| 2000 |
February |
Offered company's equity publicly on OTC market, and increased capital to 1,169.8 million yen.
|
| 2002 |
April |
Established a wholly-owned subsidiary, Sumisho Metalx (Shanghai)., Ltd., in China (In April 2006, this company was closed and its businesses were transferred to Sumitomo Corporation (Shangahai) Ltd. and Sumitomo Corporation (Guanzhou) Ltd.)
|
| August |
Moved Head Office to Kanda Surugadai, Chiyoda-ku, Tokyo |
| 2004 |
June |
Obtained ISO14001 Certification (Environmental managemnt system)
|
| 2005 |
March |
Became a wholly-owned subsidiary of the Sumitomo Corporation (delisted from the JASDAQ Stock Exchange on February 23, 2005)
|
| May |
Moved Head Office to Harumi, Chuo-ku, Tokyo |
| 2017 |
September |
Moved Head Office to KANDA SQUARE FRONT Bldg., Kandanishikicho, Chiyoda-ku, Tokyo
|
| 2018 |
April |
Became a wholly-owned subsidiary of the Sumitomo Corporation Global Metals Co.,Ltd
|
| 2021 |
April |
Became a wholly-owned subsidiary of the Sumitomo Corporation
|
| August |
Moved Head Office to KANDA SQUARE Bldg., Kandanisiki-cho, Chiyoda-ku, Tokyo |
