Hi, Good day!Now we need the copper and lead products: 1 copper products 1)copper ore:cu% above 10% 2)copper concentrate:cu% above 15%,S% above 25% 3)copper compound:cu% above 10%Quantity:500-TonFrequency: MonthlyPort:Payment Methods:T TRegards,CassielHubei Global-Union Technology Co.,Ltd