... layer 5.Accept small order single-sided pcb, circuit board :Specializing in Double Side PCB, 4-layer pcb, Multi-Layer PCB, Ceramic PCB, Rogers PCB,Aluminum PCB. MeanwhileLayer: 1-24 Layers ... Material: Ceramic , F4BK-2 , Aluminium, Rogers, High Tg FR4, FR1, CEM-1, FR-4,etc. Board ...