... quality 3, quick delivery 4, considerate service pcb board for LED display 1-12 layer:FR-4, AluShort ... 1, CEM-3, High TG, FR4 Halogen Free,Board thickness: 0.35mm to 3.0mmCopper thickness: 0.5 ... in hole: >25.0 um (>1mil) The max board size:A, Board thickness ≥1.2mm and Not Jack panel: 605*530mm ... . (HASL board: 605*450mm)B, Board thickness ≥ 1.2mm and ...