... quality 3, quick delivery 4, considerate service pcb board for LED display 1-12 layer:FR-4, AluShort lead timeMore than 10 ... : 430*430mmG, Eight-layer pcb: 430*430mmH, More than eight layers: 270*280mm - Min. Drilled Hole Size: 10mil (0.25mm) - Min ... : Punching, Routing, V-CUTCertificates: UL, ISO 9001, SGS pcb board for LED display