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Soldering is always needed for the leads which are inserted into the holes of the PCBs. Once these leads enter, through soldering process, they are mechanically mounted and fixed on the surface of the PCB. For different electrical components the hole sizes can also differ. Through soldering method, these electrical components stay firmly on the PCB and they don’t detached further and work fine. SMT solder paste printer is the machine that performs the soldering work properly and accurately so that the electrical equipments can be fixed on the surface of the PCB properly.
