Burid And Blind Via HDI PCB Boards manufactures Product Highlights锛?br/> High precision and difficulty blind and buried hole board,Robotics board with BGA pad and complicated laminated construction Professional PCB engineer for one-to-one service PCB material guranteed(ShengYi S1000-2M) Matte Dark Green TAIYO "PSR-4000", impedance control Product parameter锛?/b> Layers 8L HDI board Material FR-4 Thickness 1.6mm +/-10% Surface processing ENIG(2U") Copper thickness 1 oz Drill hole(Min.) 0.1mm Min. line space 3mil Min. line width 3mil Size 215mm*215mm Application area Robotics or Gita board Burid And Blind Via HDI PCB Boards manufactures website:http://www.ibe-technologies.net/pcb/burid-and-blind-via-hdi-pcb-boards/