... to customer needs. 5.Description of goods: seamless cored copper-aluminum solder wire, is based on zinc with 2 ... flux is 10 ~ 20% (weight percent), Advantage: smooth surface, good solderability,6.Advantages: Smooth surface, good weldability, little smell, non- corrosion(water- ... This wire is widely used in welding of copper and aluminum, copper busbar and aluminum foil, aluminum and aluminum, aluminum ...