... 2)layer: 1-12 3)board thickness: 0.4mm-3.2mm 4)copper thickness: 0.5oz, 1.0oz, 2oz, 3oz, 5) ... min. Drilled hole size: 0.2mm 6)min. Track width ... /space: 4/4mil(0.1/0.1mm) 7)surface finish: HASL, Lead ... : 90-120Ω, Tolerance: +-10% 16)Quality standard: IPC-A-600F. High Power Aluminum PCB,Aluminum PCB-4