1.aluminum LED rigid pcb 2.al: 0.8-3.0MM copper1-4oz 3. ... and special structure layer03Max size1200mm*600mm04PCB thickness0.5-3.3mm05Copper foil thicknessH 1 2 3 4 5 6 10(OZ)06Insulating ... Minimum Letter Height0.8mm20Letter Colorwhite, black, blue, yellow, red1.aluminum LED rigid pcb2.al: 0.8-3.0MM copper1-4oz3.thermal conductivity ... .0-2.5w/mk4.HASL(Pb free),OSP,Immersion gold aluminum LED rigid pcb