Material: Cordierite, Mullite, Corundum mullite Apply to iron, copper, steel, stainless steel foundry. Size customized Honeycomb ceramic plate is able to get rid of the metal impurity, refractory scrap, solid refractory alloy, sinter and molten metal liquid when casting products, reduce the air vent of castings, raise the casting quality, and reduce the cost. Material: Cordierite and mullite, ...