... .5mm, 1mm.1.2mm information of the lead free solder wire application:Soldering in TV set, radio or normal home appliancesRepair ... facilitiesSoldering in radio transponder, instrument and calculator and so on How to chose solder1.Select the solder composition. First choose between leaded ... solder joints need flux, which can be applied from a tube, with a brush, from the core of the solder or in ...