I'm 40W thermoelectric iron, although can be defended, but not quite good-looking! What should the good welded USB interface and so on PCB!
There's no soldering flux inside the tin wire
I am a solder manufacturer 0755-28105781, I QQ463641410 to use a little bit of tin wire, containing tin bright, at least to reach more than 50%. The higher the brightness of tin, the lower its melting point, the lower the content of tin, the higher the relative melting point, the effect of welding is not ideal, there will be false welding, tin is relatively slow, brightness, no amount of light.
I am a solder manufacturer 0755-28105781, I QQ463641410 to use a little bit of tin wire, containing tin bright, at least to reach more than 50%. The higher the brightness of tin, the lower its melting point, the lower the content of tin, the higher the relative melting point, the effect of welding is not ideal, there will be false welding, tin is relatively slow, brightness, no amount of light.
