Tianyin Electromechanical(SZ:300342) Xuan Gu Bao·2025-12-24 10:33Group 1 - A total of 38 stocks were listed on the institutional leaderboard today, with 26 stocks experiencing net buying and 12 stocks facing net selling [1] - The top three stocks with the highest net buying by institutions were Tianyin Machinery (4.96 billion), Zhongcai Technology (2.99 billion), and Hongda Electronics (2.61 billion) [1] - Tianyin Machinery saw a price increase of 17.21%, with 5 buyers and 2 sellers on the leaderboard [2] Group 2 - Tianyin Machinery's subsidiary, Tianyin Xingji, is a domestic manufacturer of stellar sensors for commercial operations, with applications in satellites including solar sensors and attitude control modules [3] - The company is actively expanding its customer base in the commercial aerospace sector and has made substantial progress in acquiring new client orders [4] - Shanghai Port Bay's subsidiary has launched a production line for space-grade solar cells and flexible solar arrays, supporting over 20 satellite units [5] - The partnership between Junda Co. and Shangyi Optoelectronics aims to develop perovskite batteries, which are expected to address energy supply challenges in space and support the growth of the space economy [6]