... , testing, molding ,bright solder Lead-free solder wire(Sn96.5Ag3Cu0.5):Alloy compositionSn96.5Ag3Cu0.5, good copper, tin wettability and electrical ... conductivity, thermal conductivity , solder joints bright,reliable ,Solderwire can ... tangle. When soldering tip less residue. Lead-free solder wire(Sn96.5Ag3Cu0.5)