Detailed Product Description pcb board1,base material:FR-4 epoxy resin2,cooper thickness:1 ... ,min.line width/spacing:0.1mm6,surface finishing:carbon ink7,form:punching,routing,v-cut,bevelingOur Production ... /red/blue/white/yellow.etc,as required4)Base Material:fr-4,cem-1,cem-3,ceramics,high ... gold/silver/tin,chemical gold,plated gold,OSP,carbon ink,gold finger10)Hole Plating Tolerance PTH Thickness:> ...