... thicknesses 1.6mm 4: Min. hole size: 0.2mm LED Driver Circuit Board: aluminum material,rotundity,copper 1oz, board thicknesses 1 ... , HASL.Our Production Capability for PCBLayer: 1 to 28 layersMaterial type: FR-4, CEM-1, CEM-3, High TG, FR4 Halogen ... services providedCertificate: ROHS, UL, ISO9001-2000, ISO14001Factory direct price LED Driver Circuit Board