Core Insights - The glass fiber industry has strong connections between upstream and downstream sectors, with upstream involving raw materials like ores and chemicals, midstream focusing on manufacturing, and downstream applications in transportation, construction, electronics, and emerging industries [1][4]. Industry Overview - Major listed companies in the glass fiber industry include China Jushi (600176), China National Materials (002080), Changhai Co. (300196), International Composites (301526), Shandong Glass Fiber (605006), Honghe Technology (603256), and Jiuding New Materials (000834) [1][2]. - The industry chain includes upstream suppliers such as quartz companies and chemical groups, midstream manufacturers, and downstream users [2]. Regional Distribution - Glass fiber production is concentrated in Jiangsu, Zhejiang, and Shandong provinces, with Jiangsu hosting many manufacturers like Changhai Co. and China National Materials, while the leading company, China Jushi, is located in Zhejiang [4]. Financial Performance - In 2024, China Jushi and China National Materials are expected to lead in revenue, with China Jushi projected to generate 15.48 billion yuan and a gross margin of 24.34% [6][7]. - Other companies like Jiuding New Materials and Changhai Co. also show strong gross margins above 20% [6][7]. Investment Trends - Since 2022, companies in the glass fiber sector have been expanding through subsidiaries, investment funds, and capital increases [8]. - Notable investments include International Composites planning to invest approximately 230 million yuan in upgrading production lines, and China Jushi investing around 951 million yuan for a new production line [10].