Ugbu a ụdị mkpọchi ọnụ ụzọ na ahịa nwere okwu mkpọchi 67, 17 cross lock, crescent lock 8, magnetik mkpọchi 2, enweghị ike ikpe 6. Ndị uwe ojii webatara, a na-ekewa ihe mkpuchi ndị a dị ka ikike mgbochi izu ohi n'ime A. B, C atọ.Klas A bụ nke a na-akpọkarị isi mkpọchi ochie, enwebeghị ike ...
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