Njirimara
1) Ihe a na-eme nke efere nchara pụrụ iche anaghị emetọ mmiri mmiri magnesium, nwere usoro mgbochi corrosion n'ime, ma nwee ogologo ndụ ọrụ.
2) N'iji tube na-egbuke egbuke ma ọ bụ usoro kpo oku ọzọ, enwere ike dochie ọkụ ọkụ ngwa ngwa.