Double Layer PCB is a double conductive graphic layer of circuit boards with an insulated substrate and two copper foils on both sides, electrically connected by via holes, used for more complex circuits and small electronic products motherboards.
Design: Reasonable layout of components, planning wiring, design of good through-hole.
Process: Ensure etching accuracy for inner layer production, control parameters of lamination to avoid problems, ensure accuracy of drilling and metallisation of hole wall.
Quality Inspection: Electrical test to check wiring problems and special performance, external inspection of wiring, vias, soldermask and silkscreen quality.
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