Nkenke metal z? ak?k? emep?ta omenala - nkenke z? ak?k? nhazi ahaziri maka sayens? na nkà na ?z? nke China (China nkenke metal z? emeputa) e nwere ?t?t? d? iche iche iche iche nke nkenke z? ak?k?, nnukwu mmep?ta, elu kp?mkwem na mgbagwoju udi, ojiji nke mpempe akw?kw? ihe, ?kachamara na igwe anagh? agba nchara z? ak?k?, ?la k?pa stampings, aluminom na nd? ?z? na metal z? ak?k? nhazi, nnabata ka ?g?g? ka ahaziri
Ked? ka ak?k? igwe na-esi ar? ?r? yana ya na nd? nr?p?ta ihe eserese na-ah?r? ihe eji ar? ?r??
Ngwongwo ígwè (g?nyere ?la na ihe nd? na-enwegh? ihe ? are? used?) b? ihe nd? a na-ejikar? eme ihe na ?p?p?ta ígwè stamping na nkenke ?b?aru ak?k?, mana oge ?f?d? a na-ejikwa ihe nd? na-enwegh? ?d?.
N'etiti ha, nd? ferrous ?la tumadi na-ag?nye nd? nk?t? carbon bughi ígwè, elu-edu carbon bughi ígwè, alloy bughi ígwè, carbon ngwá ?r? ígwè, igwe anagh? agba nchara, eletriki s?l?k?n ígwè, wdg
Ngwongwo nd? na-enwegh? ike b? ?la k?pa, ?la k?pa, ?la k?pa, aluminom, wdg.
Kedu otu any? si ah?r? ihe, iji mezuo nkwa d? mma na-ar? ?r?, ma nwee ike ?chekwa ebumnuche nke ihe?
Nd? na-emep?ta ihe nd? na-emep?ta ígwè na-ah?r? ?gbat? ihe nd? na-emep?ta ihe n'ozuzu ha nwere ?kp?r? nd? a:
Ngwa ak?r?ngwa ga-emer?r? ihe ar?m?r? ch?r? nke ihe eji ar? ?r?; Ak?k? stamp? na-ar? ?r? na igwe ma ? b? ak?k? ma nwee nd? ?r? ?f?d?.
Ihe ah?p?tara ga-enwer?r? ar?m?r? tekn?z? d? mma; Maka ?d? stamp? ? b?la, ihe ah?p?tara ga-enwe ike iru ihe ach?r? maka usoro stamp? ah?.
Ihe ah?p?tara ah?p?tara kwes?r? ?nwe ak? na ?ba ka mma; Ak?r?ngwa kwes?r? ?gbaso ihe ach?r? maka ar?m?r? na usoro stamp? ziri ezi, d? ka obere d? ka o kwere mee, isi iyi d? mma, ak? na ?ba d? mma, iji belata ?n?ah?a nke ak?k? stamp? ziri ezi.
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