天银机电(300342.SZ)：公司控股子公司天银星际与星链公司（SpaceX）没有业务合作

Group 1 - The core viewpoint of the article is that Tianyin Electromechanical (300342.SZ) clarified its business operations, specifically stating that its subsidiary Tianyin Interstellar does not have any business cooperation with SpaceX [1] - Tianyin Interstellar is identified as a domestic manufacturer of stellar sensors for commercial operations, and it also produces solar sensors and attitude control modules for satellite applications [1] - Additionally, the subsidiary Shanghai Xunxi Technology provides ground processing equipment for low-orbit internet satellite signals, which can also be applied in aerospace-related businesses [1]