Inert alumina balls, also known as industrial ceramic balls or packing ceramic balls, are ceramic spheres with excellent chemical and thermal stability. They are primarily made from industrial alumina and kaolin, shaped and fired at high temperatures, resulting in a uniform appearance and outstanding physical properties. Inert alumina balls can resist corrosion from acids, alkalis, and other organic solvents, and can also withstand temperature fluctuations that may occur during production. These characteristics make inert alumina balls widely used in industries such as petroleum, chemicals, fertilizers, natural gas, and environmental protection, particularly as covering and support materials for catalysts within reactors and as tower packing.