According to the Shenzhen Stock Exchange, on December 12, the exchange, in conjunction with the China Academy of Information and Communications Technology, the Zhejiang Provincial Economic and Information Bureau, the Ningbo Municipal Economic and Information Bureau, and other units, held the first service event for single champion enterprises in the manufacturing industry in Ningbo, Zhejiang. They also released the National Index for Single Champion Enterprises in Manufacturing. This index selects 50 A-share listed single champion enterprises with large market cap, good liquidity, and high R&D intensity as samples, gathering industry-leading companies such as Contemporary Amperex Technology, Shenzhen Mindray Bio-Medical Electronics, BYD, and Hangzhou Hikvision Digital Technology. In 2023, the 50 companies had an average R&D expenditure of 3.5 billion yuan. The index has sufficient investable scale and ample liquidity.