... .1 to 24 layer 5.Accept small order phone pcb board, circuit board :Specializing in Double Side PCB, 4-layer pcb, Multi-Layer ... : 1-24 Layers Material: Ceramic , F4BK-2 , Aluminium, Rogers, High Tg FR4, FR1, CEM-1, FR-4,etc. Board Thickness: 0.4 ... products is excellent and stable. 3. We choose the best material for all our products. 4. We will send the boards ...