... ,OSP 4.No MOQ 0.High quality aluminum pcb board. 0.we have UL certification ! 0.Paking ... guaranteed. Items technical index Material aluminum pcb, copper pcb, iron pcb,ceramic pcb,FR4Layer counts Single, double, four layer ... blind/buried vias, characteristic impedance control, Rigid-flex board etc Special requirement Buried/blind vias +controlled impedance ... ,welcome to our factory! ceramic pcb board