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本文针对无内定位孔pc B锣板工艺进行深入研究、实验、批量生产验证，找出一种高精度、高品质、高效率的PC B锣板制作工艺。
This article involves an in-depth study and experiment of this kind of PCB, achieves high precision, high quality and high efficiency goals through experiment and mass production quality verification.
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