Supplier: Rare earth like lanthanum, cerium, praseodymium, neodymium, samarium, gadolinium, europium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, yttrium, scandium, alkali metal like titanium, gallium, germanium, rubidium, stronium, niobium, tellurium, bismuth
Buyer: Rare earth like lanthanum, cerium, praseodymium, neodymium, samarium, gadolinium, europium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, yttrium, scandium, alkali metal like titanium, gallium, germanium, rubidium, stronium, niobium, tellurium, bismuth