PCB prototype is one of the most important parts of electronic industry, which is used to replace the chassis of electronic components in the past, and to realize the interconnection between electronic components.

The substrate of PCB itself is made of insulating material which is not easy to bend. On the surface can be seen in the small circuit material is copper foil, the original copper foil is covered on the entire board, and in the manufacturing process is part of the etching process, the left part of the network into a small line. These lines are called wires oand they are used to provide circuit connections for parts on the PCB board.

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