Aluminum PCB: 1 Layer Aluminum base PCB,Al 1.5mm,5052H34,dielectric 0.1mm,copper thickness 2 oz. Solder mask white,silkscreen black. Thermal conductibility 1.5~3.0. Used for Led Lighting . Metal Core PCB Capability: Circuit Trace Width/Space: 4/4mil The Minimum Hole Diameter: 0.5mm (NPTH), 0.3mm(PTH) The Minimum legend Height/Width: 0.8mm/0.15mm Surface Finishing: HASL-LF, ENIG, Immersion Silver,Plated Silver,OSP,ENEPIG Maximum Panel Dimension: 1200mm x 600mm Final Board Thickness: 0.5mm ~ 5.0mm Final Copper Thickness: HOZ 1OZ 2OZ 3OZ 4OZ 6OZ 10OZ Dielectric Thickness: 50um 75um 100um 125um 150um Metal Type: AL(1100.3003.5052.6061),Mirror Finish Al, Cu, Fe,Stainless Steel Metal Substrate Thickness: 0.5mm 0.8mm 1.0mm 1.2mm 1.5mm 2.0mm 3.0mm 3.2mm Solder mask colour: White, Black, Green,Red, Yellow,Blue,Grey Shaping: Tooling Punching,CNC Routing,V-CUT Special Hole: Blind&buried hole,Depth milling,T-slot,Countersink hole