Detailed Product Description 2 layer /double side printed circuit board /PCBinfo.Layer:2Material:FR-4Board finished thickness: ... TG,FR4 Halogen Free ,Rogers,HF,NELCON,TACONIC,ARLON,etc4)Surface finish/treatment: HASL/HASL lead free,HAL,Chemical Gold/tin ... ,Rigid-PCB,Flex-rigid PCB,HDI PCB ,PCB of single,Double and Multi-layers,High frequency PCB ,etc6)Max. finished board ...