Investment Rating - The report gives a "Recommended" rating for the company, Changying Tong (688143.SH) [1][26]. Core Views - The company has shown significant revenue growth, achieving 331 million yuan in 2024, a year-on-year increase of 50.22%, driven by increased orders from key military clients and improved delivery of optical fiber devices [3][12]. - The company is positioned as a leader in the optical fiber ring segment and is actively expanding into the optical communication field, aiming to diversify its market reliance and enhance performance through strategic acquisitions [11][26]. - The financial forecasts indicate a strong growth trajectory, with projected net profits of 73 million yuan, 112 million yuan, and 147 million yuan for 2025, 2026, and 2027 respectively, alongside a significant increase in earnings per share [4][27]. Summary by Sections Company Overview - Changying Tong specializes in the research, production, and sales of optical fiber gyroscope core components and solutions, recognized as a national-level "little giant" enterprise [5][10]. - The company has developed a comprehensive industry strategy that includes optical devices, specialty optical fibers, new materials, and related services, forming an integrated micro-industry chain [5][9]. Financial Performance - In 2024, the company reported a revenue of 331 million yuan, with a net profit of 18 million yuan, marking a 15.28% increase year-on-year [3][12]. - The gross margin was reported at 44.5%, reflecting a decrease of 7.8 percentage points compared to the previous year, influenced by rising accounts receivable and increased credit impairment losses [3][12]. - The company has effectively managed its expense ratios, with a total expense ratio of 36.5%, down 14.6 percentage points year-on-year [17][12]. Revenue Breakdown - Revenue from optical fiber ring devices reached 124 million yuan, up 69.1% year-on-year, with a stable gross margin of 45.5% [22]. - Specialty optical fiber revenue was 71 million yuan, showing a slight increase of 0.8%, but with a reduced gross margin of 80.2% due to price reductions [22]. - New materials generated 24 million yuan in revenue, with a gross margin of 21.9%, reflecting a significant decline due to lower margins on new products [22]. - The company also saw substantial growth in other business segments, including optical device equipment, which increased by 102.5% year-on-year [22]. Future Outlook - The company is expected to continue its growth trajectory, with revenue forecasts of 535 million yuan, 746 million yuan, and 928 million yuan for 2025, 2026, and 2027 respectively [4][27]. - The projected earnings per share for the same period are 0.60 yuan, 0.92 yuan, and 1.20 yuan, indicating a strong potential for profitability [4][27]. - The company is also pursuing strategic acquisitions to enhance its technological capabilities and market reach, particularly in the optical communication sector [11][26].

公司代码：688143 公司简称：长盈通 第一节 重要提示 1、本年度报告摘要来自年度报告全文，为全面了解本公司的经营成果、财务状况及未来发展规划，投 资者应当到www.sse.com.cn网站仔细阅读年度报告全文。 2、重大风险提示 报告期内，公司不存在对生产经营构成实质性影响的重大风险，公司已于本报告中详述公司在经营过程 中可能面临的相关风险，详见本报告第三节"管理层讨论与分析"中"四、风险因素"的相关内容。 3、本公司董事会、监事会及董事、监事、高级管理人员保证年度报告内容的真实性、准确性、完整 性，不存在虚假记载、误导性陈述或重大遗漏，并承担个别和连带的法律责任。 4、公司全体董事出席董事会会议。 5、中审众环会计师事务所（特殊普通合伙）为本公司出具了标准无保留意见的审计报告。 6、公司上市时未盈利且尚未实现盈利 □是 √否 7、董事会决议通过的本报告期利润分配预案或公积金转增股本预案 经中审众环会计师事务所（特殊普通合伙）审计，公司2024年度合并报表实现归属于上市公司股东的净 利润为17,941,394.15元，母公司净利润为12,673,658.22元。截至2024年12月31日，合并报表累计未 ...