Lead-free solder wire (Sn95.5Ag4Cu0.5) Jion high anti-oxidation element, Melting, mixing, testing, molding .bright sold Lead-free solder wire (SnAg4Cu0.5)CA122soldering wire , good copper, tin wettability and electrical conductivity,thermal conductivity , solder joints bright, reliable ,Solder wire can be classified according to the different inner core solid core wire,rosin-based flux, synthetic ...