multilayer pcb hard gold

8 layer 1 Layer:8 2 Material:FR-4 TG170 3 Board finished thickness:1.57mm 4 Min.Lin width:6mil 5 Min.line spacing:6mil 6 Surface finish/treatment:Immersion gold+hard gold(0.76um min) 7 Copper thickness:1oz 8 E-Tess and visual inspection:100%(X-Ray) 9 Inner packing:vacuum packing Outer packing:standard carton packing apply to industrial application, medical equipment, power supply and so on.PCB type: 1>Rigid board from double sided to Layer30,we are professional to build HDI,Back plane,impedance control board.2>FPC and Flex-rigid board 3>and some special board,eg PTFE,Aluminum base,Rogers,Polyclad,Arlon,Getek,Nelco raw material board Thanks & Best regards! Amy Deng We Multech offering Rigid, Flex and Flex-Rigid PCB to our customers all over the world !