1high power aluminum led light circuit boards pcb 2.al: 1.6MM copper foil 1oz 3.thermal conductivity 2.5w/mk 4.HASL(Pb free) NO. ITEM INDEX 01Surface treatmentHAL(lead free), Immersion Gold, OSP02LayerSingle-sided, double-sided, multilayer and special structure layer03Max size1200mm*600mm04PCB thickness0.5-3.3mm05Copper foil thicknessH 1 2 3 4 5 6 10(OZ)06Insulating layer thickness50 75 100 125 ...