Praseodymium neodymium oxide is a pink powdery solid, which is mainly used in petroleum cracking catalyst, dyeing and tanning aid ceramic and glass colorant, optical fiber, polishing powder, plastic pigment, chemical catalyst, permanent magnet motor, generator, nuclear magnetic resonance imager, magnetic separator, magnetic crane, instrument, liquid magnetization, magnetic therapy equipment, etc. it has become an automobile manufacturing, general machinery Electronic information industry a

Dysprosium oxide is a white or light yellow powdery solid, which is an essential element for the preparation of rare earth giant magnetostrictive material terbium dysprosium ferroalloy.