... quick delivery 4, considerate service pcb board for LED display 1-12 layer:FR-4, AluShort lead timeMore than 10 ... -4, CEM-1, CEM-3, High TG, FR4 Halogen Free,Board thickness: 0.35mm to 3.0mmCopper thickness: 0.5 ... Line Spacing: 4mil (0.1mm)Surface finishing: HASL / HASL lead free, HAL, Chemical tin, Chemical Gold, Immersion Silver/Gold, OSP, ... CUTCertificates: UL, ISO 9001, SGS pcb board for LED display