Aluminum Base/FR-4 Copper Thickness: 18um Board Thickness: 1.2mm Min. Hole Size: 0.25mm Min. Line Width: 0.1 0mm Min. Line Spacing: 0.1mm4mil) Surface Finishing: OSP Certificate: ROSH. ISO9001. UL Size: Customized Service: One-stop Service Thickness: 0.6-2.4mm Surface Treatment: HASL (Tin-Lead Free), ENIG(Immersion Gold), Immersion Silver Min.line width: 0.15mm Min.line space: 0.15mm Min.hole size: 0.25mm Application: Electrice Vehicle Usage: OEM Electronics