ʻO ke kaulahao anti-corrosive e hāʻawi ana i ke kūpaʻa maikaʻi loa. Kūpono no nā noi kahi e koi ʻia ai ka ikaika a me ka pale ʻana i ka corrosion. Hoʻohana ʻia i nā noi me nā ukana hana kiʻekiʻe.