... customer's requirement. Any requirement,please contact to me LITHIUM NIOBATE MULTIPLE CRYSTAL SPECIFICATIONS: Nb2O5Li2OImpurity Contained (wt% ... products contain rare earth oxides, rare earth salts, metal neodymium, metal praseodymium, Pr-Nd alloy, praseodymium, neodymium and dysprosium ... alloys, metal lanthanum, low iron, low magnesium mixed rare earth ...