6-layers 2Step HDI PCB Laminate twice. Take an eight-layer circuit board with blind/buried vias as an example. First, laminate layers 2-7, first make elaborate blind/buried vias, and then laminate layer 1 and 8 layers to make well-made vias .The following is about6 layers 2Step HDI, I hope to help you better understand 6 layers 2Step HDI.
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