Wanted: 铜粉、铜矿石、炼铜尾渣、冰铜渣、铱钌铑钯金铂、锂铍矿料尾沙

Purchase copper powder, copper ore, copper smelting tailings, matte slag, and precious metal lithium-beryllium ore materials and tailings sand; content above 0.5%. Around Baiyin.