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PT Obsidian Stainless Steel is a subsidiary company of Xiangyu Group and Delong Group, engaged in nickel smelting and stainless steel manufacturing. The production line is located in  Southeast Sulawesi, Indonesia and  headquartered in the Indonesia Stock Exchange Building, Jakarta.

• Nickel Smelting – Reduction Kiln-Electric Furnace (RK-EF) Technology.
• Stainless Steel – Argon Oxygen Decarburization (AOD) Technology.