... ,buried locating3,base material:ceramics+fr-44,board thickness:1.0mm5,min.hole size:0.25mm6,min.line ... + gold fingerOur Production Capability For Other PCB:1)Layer:1-162)MAX.Board Size For Single/Double-Sided ... Material:fr-4,cem-1,cem-3,ceramics,high tg cooper(CCL)5)Board Thickness:0.2mm-4. ... ,carbon ink,gold finger10)Hole Plating Tolerance PTH Thickness:>0.025mm11)PTH Tolerance:±0.075mm12)NPTH Tolerance ...