... Our Goal:To provide you with the best service and the best quality ! KangDong Electric Technology Co ... CEM-3,High TG,FR4 Halogen Free ,Rogers,HF,NELCON,TACONIC,ARLON,etcMax. finished board size:23 ... PCB ,PCB of single,Double and Multi-layers,High frequency PCB ,etcPackingInner :Vacuum packing/Plastic bagOuter ... reasonable one that you can trust! Good Quality! We passed ISO UL certificates andour products ...