... -sale system 4.OEM service Our Goal:To provide you with the best service and the best quality ! KangDong Electric Technology ... *900mm)Min.drilled hole size:3mil(0.075mm)Min.line width:3mil(0.075mm)Min.line spacing:3mil(0.075mm)Surface finish/treatment ... :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 ...