... ,Larger supplier 3,Timely delivery 4,Good faith Product:Copper scrapChemical Formula: Al,Cu,Si,Mg,ZnSpecification: ELEMENTSSYMBOLVALUECOPPER ... industry, machinery, building industry, national defense industry .Copper Scrap is industry a important sources of the raw ... , lead ingots, antimony ingots, aluminum alloy ingots, copper cathodes, copper scrap, aluminum scrap-based, and have a very high ...