Product Model: Aluminum Nitride Ceramic PCB Base Material: Ceramic Substrate PCB Layers: 2 Layers Color: White Substrate Thickness: 0.635mm Aluminum Nitride Copper Thickness: 1OZ (35μm) Surface Treatment: Immersion Gold Gold Layer Thickness: ≥3μ" Minimum Aperture: 0.8mm Process Features: Through hole processing, ceramic dam technology