The company's silicon dioxide products and the aerospace silicon dioxide nanoporous aerogel materials you mentioned are all silicon dioxide. They all have nanoporous structures. They all have characteristics such as low density and low thermal conductivity, but there is a certain difference in structure. They can be thought of as two different products. The two are all different from production process to raw materials, and there are differences in thermal conductivity and looseness. The company's silicon dioxide is also an insulating material with excellent performance, but currently it does not meet aerospace standards.