... point ,good fluidity and invasive 4.0.3Ag0.7Cu 5.rosin ,flux content 1.cored welding wire:Soldering in TV set, radio or ... .1) It can applied in radio, communication, meters, instruments and copper, tin and irons and etc.2) Residue is easy to ... :1)Tin solder2)Lead-Free solder bar and wire3)Tin welding wire 0.3Ag-0.7Cu lead free cored ...