... 3.fr-4 PCB 4.Timely delivery 5.Reputable manufacturer pcb,4 layer pcb with gold finger1.We have 10 years experience ... layers2Max. Board size2000×610mm3Min. board Thickness2-layer 0.15mm4-layer 0.38mm6-layer 0.55mm8-layer 0.80mm10-layer 1.0mm4Min. line Width/Space0.075mm ... gold20MaterialsFR4,H-TG,Teflon,Rogers,Ceramics,Aluminium, Copper base 6 layer PCB Plating Gold Circuit Board Manufacturer