力星股份(300421.SZ)：目前重点开发的氮化硅陶瓷球产品处于小批量阶段

Group 1 - The company is currently focusing on the development of silicon nitride ceramic ball products, which are in the small batch production stage [1] - The main application areas for these products include industrial mother machines, high-speed spindle bearings for precision grinding machine tools, electric drive systems for new energy vehicles, and robotics [1]