... crystal composition,low melting point,easy flow,can flow into a small clearance of brazing seam.Use for copper and copper ... TC-310A6.5-7.5The balance710800Contain a little phosphorus,has better plastic nature,a little higher melting point.Use for copper ... ect.JCuP-32026.1-6.8The balance710820Contain a little phosphorus,good plastic nature,a little higher melting point.Can make many ...