... -Tin,Silver-Copper-Zinc-Cd,Copper-Zinc,Aluminum base copper welding rods / brazing rods / solder rodsPhos-copper ,Phos-Copper-Silver ,Silver ... has the characters of easily-flowing,low cost,and perfect welding effect.Needn't to use flux when brazing copper and ... crystal composition,low melting point,easy flow,can flow into a small clearance of brazing seam.Use for copper and copper alloy ...