ʻO ka Cerium oxide (CeO2), he pauda melemele māmā ma ka lumi wela, ʻo ia ka oxide paʻa loa o ka cerium element honua laha ʻole. Hoʻohana nui ʻia ia e like me nā mea hoʻohui i ka ʻoihana aniani, nā mea polishing, nā mea hoʻohui pena, nā mea luminescent honua liʻiliʻi, a me nā mea ʻē aʻe, a me nā mea maka no ka synthesis o ka metala cerium.
Ua hana ʻo WONAIXI i ka cerium oxide no nā makahiki he ʻumi a hiki ke hāʻawi i nā mea kūʻai aku me nā huahana cerium oxide kiʻekiʻe a me ke kumukūʻai hoʻokūkū.