... high quality 4.1-28 layers pcb and pcba Our Goal:To provide you with the best service and the best ... 075mm)Min.line spacing:3mil(0.075mm)Surface finish/treatment:HASL /HASL lead free,HAL,Chemical Gold/tin,Immersion Silver/Gold/ ... impedence+BGAProfiling :Punching ,Routing ,V-CUT,Beveling Product range:Flex-PCB,Rigid-PCB,Flex-rigid PCB,HDI PCB ,PCB of single,Double and Multi-layers,High frequency ...