长海股份：公司目前没有直接和航空航天企业的业务往来

Core Viewpoint - The company, Changhai Co., Ltd. (300196.SZ), focuses on the research, production, and sales of high-performance glass fiber materials, which are widely used in various industries, including transportation and renewable energy. However, the company does not engage in the manufacturing of downstream composite materials and currently has no business dealings with aerospace enterprises [1]. Group 1 - The company’s glass fiber composite materials are considered key lightweight materials in modern industry [1]. - The company is positioned upstream in the industry chain, focusing on high-performance glass fiber materials [1]. - There are multiple processing and manufacturing stages between the glass fiber products and the downstream end products [1].