瑞华泰：公司的主营业务为高性能聚酰亚胺薄膜的研发、生产和销售

Core Viewpoint - The company, Ruihua Tai, focuses on the research, production, and sales of high-performance polyimide films, with a minor revenue contribution from the aerospace sector projected for 2025 [2] Group 1: Company Overview - The main business of the company is high-performance polyimide film [2] - The company engages in project cooperation and research development in the aerospace field [2] Group 2: Financial Projections - The projected revenue from the aerospace sector for 2025 is approximately 1.8 million yuan [2] - This revenue represents less than 1% of the company's total revenue [2]