Igwe igwe anaghị agba nchara bụ njikọ ọkpọkọ eji ebufe gas, mmiri mmiri, uzuoku na mgbasa ozi ndị ọzọ, a na-ejikwa ya nke ọma bendability, nguzogide corrosion, oke okpomọkụ na-eguzogide, na ike ibu nrụgide.Ihe na-esonụ bụ mmeghe ngwaahịa, ụdị nha, oke nrụgide ...
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