2805303035
- Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury
- Rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed
- Other
- Of a purity by weight of 95% or more
- Europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and yttrium
- Erbium