国际复材：专注玻璃纤维及其制品研发生产与销售

Group 1 - The company specializes in the research, production, and sales of fiberglass and its products, indicating a focus on high-tech applications [1] - The products are widely used in various downstream sectors, including electronics, wind power blades, automotive and rail transportation, construction materials, industrial tanks, electrical insulation, and aerospace [1] - The company does not produce copper-clad laminates, as confirmed in a response to an investor inquiry [1]