JAKARTA, Sept. 23 (Xinhua) — Indonesian President Joko Widodo inaugurated on Monday two big copper smelters that were expected to increase the value of Indonesian mining products in the global market.
One of them is a copper refinery facility belonging to PT Amman Mineral International that is located in West Sumbawa, West Nusa Tenggara province. The smelter spent 21 trillion rupiah (1.4 billion U.S. dollars) i