... , high quality 3, quick delivery 4, considerate service pcb board for LED display 1-12 layer:FR-4, AluShort lead timeMore ... Mask Color: Green/Yellow/Black/White/Red/BlueTolerance - Shape tolerance: ±0.15 - Hole tolerance: PTH: ±0.075 NPTH: ±0.1PCB Packing - Inner ... : Punching, Routing, V-CUTCertificates: UL, ISO 9001, SGS pcb board for LED display