... compound or the PCB board is small, then it won’t transmutation, we needn’t open the pre- ... compound or the PCB board is small, then it won’t transmutation, we needn’t open the pre- ... IR-Lamp, Regulate the temperature (the temperature must be warm enough to liquefied the solder), focus the Infrared ... cover the hardware and the PCB board (which won’t be maintained) with the aluminium-foil paper, Then put ...