Tin smelting center owned by the organization is located in Mentok, Bangka and Kundur in Riau. Both equally smelting models have a complete of 12 models of furnaces. To improve the quality of the raw content tin ore, the corporation also provides a Middle of tin ore leaching (washray). Both https://juliusmbydd.designertoblog.com/61855145/rumah-for-dummies