SN/T 5252-2020
Copper, chromium, manganese, barium, cobalt, thallium, niobium, tantalum, titanium, molybdenum, yttrium, lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, dysprosium, holmium, erbium, thulium, ytterbium in imported iron ore Deter (English Version)