A na-eji ígwè rụọ ọtụtụ arụ. Aluminium, ọla kọpa, ọla, igwe anaghị agba nchara, Nickel,
Mone, zinc, na iron na-ejikwa ya. A na-ejikọ ndị agha na-agbaze na zinc inye ha
na-eguzogide nguzogide. A na-etinye ntu na-acha uhie uhie na-enwu ọkụ iji nyefee ha nke ọma
Nke ahụ na-enye ụfọdụ ego nguzogide corrosion. A na-akpọ mbọ ciment a bụ n'ezie
kpuchie ya na resin plastik iji melite njigide ha. A na-enye ụfọdụ ndị na-eme ihe mkpuchi enamel nwere agba
Ijikọta ya na agba nke ihe ha na-eme.
