... ,Silver-Copper-Zinc-Cd,Copper-Zinc,Aluminum base copper welding rods / brazing rods / solder rodsPhos-copper ,Phos-Copper-Silver ,Silver-Copper-Zinc ... has the characters of easily-flowing,low cost,and perfect welding effect.Needn't to use flux when brazing copper and ... ,fuel gas ware,radiant heating and cleaners,polishes ect. copper welding rods / brazing rods / solder rods