Izinqubo zokukhiqiza amabheji ngokuvamile zihlukaniswa zibe izitembu, i-die-casting, i-hydraulic pressure, i-corrosion, njll. Phakathi kwazo, ukugxiviza nokukhipha ukufa kuvame kakhulu. Ukwelashwa kombala nezindlela zokufaka imibala zihlanganisa koqweqwe lwawo (i-cloisonné), koqweqwe lwawo lokulingisa, upende wokubhaka, iglue, ukuphrinta, njll. I-mater...
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