Detailed Product Description multi-layer PCBLayer4LBoard MaterialFR-4Board Thickness1.6 mmCopper Thickness1 OZSurface TreatmentimmersiongoldMin Hole0.2 mmMin Line Width3 milMin Line Space3 milSolder Mask greenSilk ScreenwhiteOutlineroutingWe can provide PCBs range from 1 layer up to 20 layers, flexible PCB, quick-turn PCB, SMT business with good quality and competitive price.