pcb board for LED display 1, best price 2, high quality 3, quick delivery 4, considerate service pcb board for LED display 1-12 layer:FR-4, ... AluShort lead timeMore than 10 years factory experienceISO9001, ISO14001,RoHS ... carton packingProfiling: Punching, Routing, V-CUTCertificates: UL, ISO 9001, SGS pcb board for LED display