About Sumiseki Holdings, Inc.
Sumiseki Holdings, Inc. is a diversified company specializing in the following core business activities:
- Coal Trading: Imports, purchases, and sells coal within Japan.
- Industrial Materials: Manufactures and sells artificial diamonds, as well as collects, processes, and distributes crushed stones.
- Investments: Actively invests in coal-related companies to expand its industry presence.
Founded in 2008, the company is headquartered in Tokyo, Japan, and continues to grow its operations in the energy and materials sectors.