... 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 ... .4mm): 350*300mmE, Single-sided board: 606*530mm (board thickness>1.2mm)F, Six-layer pcb: 430*430mmG, Eight-layer pcb: 430*430mmH, More than eight ...