... usual CPSI for honeycomb ceramic substrate is 400. The shape of honeycomb ceramic is round, racetrack, ellipse and other special ... & durable performance are achieved through high cell density of 400, 500 and 600 cpsi;All of these make our ceramic honeycomb an ideal catalyst ... ,At present, our typical substrate are available in a variety of sizes with the different shapes, such as: round, elliptical, ...