... .Refractory brick: Fire clay refractory brick, High alumina refractory brick, Silica refractory brick, Magnesia brick, Acid resistant brick, ect..Insulation brick ... ,Bulk ceramic fiber.Refractory castable:Clay castable, High alumina castable, Silica castable, Mullite castable, Corundum castable.Refractory raw material: The chamotte ...