Tin smelting Middle owned by the corporation is located in Mentok, Bangka and Kundur in Riau. Equally smelting models have a complete of twelve models of furnaces. To further improve the quality of the raw materials tin ore, the corporate also has a center of tin ore leaching (washray). The https://plattimah16936.blogchaat.com/30498729/the-definitive-guide-to-alat