... 5got UL,SGS certification &good q Our PCB Production line Capability for your referrence1)Layer:from 1 to 402)Board finished thickness ... :0.21mm-7.0mm3)Material:FR-4,CEM-1,CEM-3,High TG ... tin,5)Product range:Flex-PCB,Rigid-PCB,Flex-rigid PCB,HDI PCB ,PCB of single,Double and Multi-layers,High frequency PCB ,etc6)Max. finished board size ...