Activated alumina is a porous, highly dispersed alumina with adsorption properties and catalytic activity, featuring a large specific surface area. It is suitable for drying various gases and liquids, and can be used for deoxygenation, defluorination, arsenic removal in drinking water and industrial installations, as well as decolorization and deodorization of sewage. It is produced through scientific formulation and catalytic finishing using high-purity alumina. It can adsorb and remove harmful fluoride from water. In petroleum, fertilizers, chemical industry, food, and many other reaction processes, it is used as an adsorbent, desiccant, catalyst, and carrier. Based on its applications, it can be categorized into: activated alumina adsorbent, desiccant, and catalyst carrier. The functions of activated alumina balls: Activated alumina balls are suitable for drying various gases and liquids and are used as adsorbents, desiccants, catalysts, and carriers in many reaction processes such as petroleum, fertilizers, and chemical industries. Activated alumina is a solid material with high porosity and dispersion, possessing a large specific surface area. It exhibits excellent adsorption properties, as well as good pressure resistance, wear resistance, and thermal stability. Therefore, it is widely used as an efficient adsorbent, desiccant, and catalyst carrier for various reactions.