タイトルまたは説明

Tantalum resources are widespread, with the most important known resources being found in Brazil and Australia. In mid****8 the main mining operations were in Australia, Brazil, Canada, Mozambique and Ethiopia; with changes in the world economy this led to the main mining operations of mid****9 being in Brazil, Ethiopia and China, with additional quantities originating in central Africa, Russia and southeast Asia. We do supply coltan on monnthly basis. at least *0 tons per order.