Product Model: Micro PCB, Ultra Small Size PCB Base Material: FR-4 PCB Layers: 4 Layers Solder Mask Color: Green / White Finished Thickness: 0.6mm Copper Thickness: 1OZ Minimum Trace Width: 6mil (0.15mm) Minimum Spacing: 6mil (0.15mm) Surface Treatment: Gold Plating Gold Layer Thickness: 0.2μm (8μ") Production Capacity: Minimum finished board dimension: 0.5mm × 1.0mm