4 Layer PCB board4 layer HDI PCBNumber of Layers: 4-Layer Copper Thickness: 1OZ Min.Line Width: 0.1MM Min.Hole Size: 0.2MM Board Thickness: 1.6MM Base Material: FR4 Min. Line Spacing: 0.1MM solder mask oil color: Green Surface Finishing: Immersion GOLD/HASL
