... Silica castable, Mullite castable, Corundum castable.Refractory raw material: The chamotte, Calcined flint clay, Calcined kaolin, ... specialized manufacturer and exporter of insulation and refractory material in China. Our products mainly include Refractory brick,Heat ... brick, Refractory castable,Ceramic fiber products and Refractory raw material, primarily export to Europe, east Asia, southeast ...