What's the PCB producing process ?
PCB Manufacturing Process:
Board Cutting— Drilling — PTH+panel plating— Outer layer image transfer— QC— pattern plating—Stripping— Etching — Tin stripping— 1st ET &QC — Via plugging (optional) — solder mask— QC— legend— carbon ink (optional)— QC (Check QSP/ Immersion Silver/Tin Drilling Hole )—Immersion gold/ HASL — V-CUT — Punching/Routing— QC— Cleaning— PFT/ET— FQC— Packing.