Product Model: Wireless Charging PCB Base Material: S1000-2 PCB Layers: 6 Layers Color: Green solder mask, white silkscreen Finished Thickness: 1.2mm Copper Thickness: 2OZ Surface Treatment: Immersion Gold, gold deposition ≥ 2μm Hole Wall Copper Thickness: 35μm Minimum Aperture: 0.4mm Application: Wireless charging products