Address	6-16-12 Shimbashi Tokyo Tokyo 105 Japan
Employees	-
Website	http://www.sumiseki.co.jp
Updated	07/08/2019
Sumiseki Holdings, Inc. engages in the manufacture and sale of coal products, artificial diamonds, and crushed stones. Its operations are carried out through the following segments: Coal, New Materials, and Quarry. The Coal segment handles the purchase and sale of coal.