Kuponya kwa Copper
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Kuponya kwa Copper
Kuponyera mkuwa ndi mtundu wa zinthu zamkuwa zomwe zimagwiritsidwa ntchito kwambiri pamakampani opanga makina, zomanga zombo, zamagalimoto ndi zomangamanga.Mitundu yotchuka kwambiri yamitundu yamkuwa imatha kugawidwa ngati Cu-Sn, Cu-Al, Cu-Pb, Cu-Mn castings.M'munsimu muli magiredi wamba
