... the manufacture of microelectronic devices.Efficacious catalyzer: Copper and copper alloy nanometer, feature high efficacy and selectivity, can be used as ... impurities includes elements such as B,Al,Si,Cr,Mn,Fe,Co,Cu,Mo,W,P,C,S. We offer at ... with 100-1000g in a metal box. nano copper particles Fe,Cu,Ni,Zn,Ag,Sn,Bi