Iinkqubo zokuvelisa ibheji ngokuqhelekileyo zahlulahlulwe zibe stamping, die-casting, hydraulic pressure, corrosion, njalo njalo. Phakathi kwazo, isitampu kunye ne-die-casting zixhaphake kakhulu. Unyango lombala kunye nobuchule bombala bubandakanya i-enamel (cloisonné), i-enamel yokuxelisa, ipende yokubhaka, iglue, ukuprinta, njl njl.
Funda ngokugqithisileyo