... price 2, high quality 3, quick delivery 4, considerate service pcb board for LED display 1-12 layer:FR-4, AluShort lead ... 10 years factory experienceISO9001, ISO14001,RoHS,UL,TS16949, SGS TestFactory Manufacture Capability:Layer: 1 to 12 layersMaterial type: FR-4, CEM ... carton packingProfiling: Punching, Routing, V-CUTCertificates: UL, ISO 9001, SGS pcb board for LED display