... 3) SGS report 4) accept Paypal wholesale 0.5mm lead solder wire, welding wire: There are tin-line features:1) made of pure ... tin, wettability, electrical conductivity, good thermal conductivity.2) moderate flux, solder ... , full, black spot is not easy on the tin.4) winding neat, tangle, easy welding operation, high efficiency. Other motherboard repari ...