Product Features Aluminum Special Method & High Purity Ceramic Coating Exurbanite is the state of the art B-step method initially used in airplanes, ships, and semiconductors. The Aluminum method provides high anti-corrosive properties coupled with strong durability. It is coated with high purity ceramic layered on top of a stainless steel base. Because of this vigorous process and the quality of the materials, the Aluminum Ceramic Pot is strong, pastorate-resistant, and erosion-proof.