... Product Description 1,multilayer printed circuit board/pcb,8-layer2,base material:fr-4 epoxy resin3,board thickness:2.0mm4,min ... )Solder Mask:green/red/blue/white/yellow.etc,as required4)Base Material:fr-4,cem-1,cem-3,ceramics,high tg ... control,BGA,semiconductor vias,silver-filled hole23)Form:punching,routing,v-cut,beveling