濮阳惠成(300481.SZ)：不生产碳纤维

Group 1 - The company, Puyang Huicheng (300481.SZ), does not produce carbon fiber [1] - The main business activities include the research, production, and sales of anhydride derivatives and functional material intermediates [1] - The products are widely used in various fields such as electronic component packaging materials, electrical equipment insulation materials, wind power, composite materials, and coatings [1]