... indium ingot(in 2N,3N,4N, 5N, 6N, 7N purity grade) and indium products. Our company specializes in ... indium ingot(in 2N,3N,4N, 5N, 6N, 7N purity grade) and indium products.Indium ingot: Chemical contents ... on purity content.We have two kinds of 7N indium available depends on different application by end-users ... is not used for InSb compound semiconductor. b.7N Indium Impurity PPM max each (ICP-MS).Cu/ ...