Copper-arsenic master alloys amagwiritsidwa ntchito ngati dezincification inhibitor mu mkuwa ndikuwongolera kukana kwa dzimbiri kwa ma aloyi amkuwa-aluminiyamu ndi zida zamakina azitsulo zamkuwa zotsika.
Monga zomwe titha kupereka: 20%, 25%, 30%, makonda.
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