... Layers: 4-Layer Base Material: FR-4,CEM-1,CEM-3,Hight TG,FR4 Halogen Free,FR-1,FR-2,Aluminum ... package wayDelivery Detail:7-25daysSpecifications1.Discount 2.Free Test& Free programmer 3.customs circuit board 4.pcb design & manufacture 5.UL,CE ... Specification of PCB Manufacturing1Layer1-30 layer2MaterialFR-4,CEM-1,CEM-3,Hight TG,FR4 Halogen Free,FR-1,FR-2,Aluminum3Board ...