Alkaline battery separator paper is a specialized material for alkaline batteries that isolates the positive and negative electrodes of the battery, prevents direct contact between the positive and negative electrodes, and prevents internal short circuits (self discharge) while allowing ions in the electrolyte to freely pass through, ensuring normal discharge of the battery; Alkaline battery separator paper is mainly made of special vinylon fiber and modified fiber as raw materials, and the surface is coated and copied. Usually with a thickness of 30-200um. China is a major producer and consumer of alkaline batteries. In 2021, the total amount of alkaline battery separator paper used in China was about 3000 tons, with over 80% relying on imports. Wanbongtai is a major domestic manufacturer of alkaline battery separators, with product performance close to imported levels. It has also led the development of the separator paper industry standard (QB/T 4173-2011), which has been unanimously recognized by many well-known large battery companies in China. The Chinese battery industry has listed Wanbangte Materials as the preferred enterprise for promoting the localization of alkaline battery separators.