Alumina DPC ceramic substrate Direct Plating Copper Material: Alumina ceramic Thickness: 0.5 Graphic tolerance: ±0.03 Product size: 109.2*54.5mm Tolerance: ±0.05 Warp (mm): 0.003/mm Features: Ceramic thermal conductivity>24, with high line accuracy, high surface flatness, high insulation and high thermal conductivity, low thermal expansion coefficient, circuits can be vertically interconnected LED, laser, optical communication, laser radar