1, fast leadtime for sample and mass production. 2, small order quatity accept 3, ... -30 layer2MaterialFR-4,CEM-1,CEM-3,Hight TG,FR4 Halogen Free,FR-1,FR-2,Aluminum3Board thickness0.2mm-7mm4Max.finished ... of printed circuit board assembly flexible pcb and pcb assembly for Communications systerm