| 10/05/18 |
Acquires ISO9001:2008 license at Akabira Factory.(manufacturing of diamond abrasives) |
| 08/10/01 |
Sumitomo Coal Mining Co.,Ltd. changed it of a business name to Sumiseki Materials Co., Ltd. |
| 06/06/01 |
I set up a nanomaterial research institute. |
| 05/04/25 |
Relocates the main office and diamonds dept. to Shimbashi, Minato-ku, Tokyo |
| 05/04/18 |
Opens the web site of SCM FINE DIAMOND Products. |
| 03/12/01 |
Newly establishes sales engineering team to meet with our customer’s needs which became stricter year by year more closely. |
| 02/09/01 |
Starts to deal in mono-crystalline diamond powder and the other polishing consumables |
| 01/05/18 |
Acquires ISO9001:2000 license at Akabira Factory.(manufacturing of industrial diamond products) |
| 00/04/01 |
Starts entrusted explosion and grading business.
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