Nā mea nui no ka hanaʻana me ka corrosione.
ʻO keʻano hana lapaʻau no ka hanaʻana o ka pahu mālama wai o ka oxygen.
Papa Hoʻonaʻauao, mahiadical Technologies, electeronics, ka wai o ka wai, ka wai o ka meaʻai i hoʻohana ai i nāʻaila wai.