Aluminum Nitride(AlN) Ceramics have high thermal conductivity, low dieletric constant and dissipation coefficient, good insulation and excellent machanical properties, as well as a coefficient of linear expansion. The fired substrate can be processed in a high power laser equipment precisely. Product Details: Material: Aluminum Nitride Function: Insulating device ceramic. Type: Ceramic. Color: Gray. Can be Customed: Yes, please provide drawings of specific goods.