| 摘要 |
A PCB (Printed Circuit Board) is manufactured by cutting an original PCB panel into a working panel from a composite device that a volume control and an electronic circuit connects electrically on the PCB, coating the front face of the PCB panel with etching resists, etching, plating and punching. The above plating method comprises HAL treatment, which is composed of (a) printing carbon only on a face of cupper foil, (b) dipping the PCB in soldering bath, and (c) blowing air when dip out. Then the obtained PCB has good solderability and the process is simple and saves costs.
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