1.LED printed wiring board 2.Material: aluminum 3.Copper thickness1oz 4.Board thicknesses ... 1.6mm 5.Min. hole size: 0.2mm LED printed wiring board :aluminum,rotundity,copper 1oz, board thicknesses 1.6mm, Min ... providedCertificate: ROHS, UL, ISO9001-2000, ISO14001Factory direct price LED Printed Wiring Board