... spacing:3milPackingInner :Vacuum packing/Plastic bagOuter :Standard carton packingOur PCB Production line Capability for your referrence1)Layer:from 1 ... Rogers,HF,NELCON,TACONIC,ARLON,etc4)Surface finish/treatment: HASL/HASL lead free,HAL,Chemical Gold/tin,Immersion Silver/Gold/Tin ... gold,Plating tin,5)Product range:Flex-PCB,Rigid-PCB,Flex-rigid PCB,HDI PCB ,PCB of single,Double and Multi-layers,High ...