Description

Sumiseki Holdings, Inc. primarily operates in Japan, focusing on the import, procurement, and distribution of coal. Beyond this core business, its operations extend to the manufacturing and sale of artificial diamonds, as well as the collection, processing, and supply of crushed stone. The company also strategically invests in various enterprises, including those within the coal sector. Sumiseki Holdings, Inc. was established in 2008 and maintains its principal office in Tokyo, Japan.