长盈精密：公司有为便携式卫星通讯接收站提供结构件产品 业务占公司营收比重极小

Group 1 - The core viewpoint of the article is that Changying Precision (300115) has indicated its involvement in providing structural components for portable satellite communication receiving stations, although this business contributes a very small portion to the company's overall revenue [1] Group 2 - The company confirmed its engagement in the portable satellite communication sector through an interaction on its platform [1] - The revenue contribution from this specific business line is minimal, highlighting its limited impact on the company's financial performance [1]