The Xiaomi AX9000 is a high-performance router with a metal casing design. The metal shell can not only provide better heat dissipation, but also increase the stability and durability of the product. In addition, the metal shell can effectively prevent electromagnetic interference and provide more stable wireless signal transmission. Therefore, the metal shell design of the Xiaomi AX9000 not only has a beautiful appearance, but also improves the performance and service life of the product.