... -Tin,Silver-Copper-Zinc-Cd,Copper-Zinc,Aluminum base copper welding rods / brazing rods / solder rodsPhos-copper ,Phos-Copper-Silver ,Silver-Copper ... .5-7.5The balance710800Contain a little phosphorus,has better plastic nature,a little higher melting point.Use for copper ... 32026.1-6.8The balance710820Contain a little phosphorus,good plastic nature,a little higher melting point.Can make many kinds ...