Introduction to the exhibition

Pad or over the line hole size is too small, or the pad size and drill size mismatch. The former artificial drilling unfavorable latter CNC drilling disadvantage. The pad is easy to drill into a "c" shape, while drilling off the pad. Wire too thin, and a large area of unrouted district has not set copper, likely to cause corrosion uneven. That is, when not finished wiring area of corrosion, thin wire corrosion is likely overdone, or similar non-broken off, or completely off. So, set just to increase the role of copper ground area and interference. The reliability of the above factors will be compromised on the quality of the board and future products.

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