长盈通（688143）：下游需求快速复苏，三大增长曲线或将迎来爆发

Investment Rating - The report maintains a "Strong Buy" investment rating for the company [2][5]. Core Views - The company is expected to benefit from a rapid recovery in downstream demand, with three major growth curves poised for explosive growth [5]. - The company reported a revenue of 331 million yuan in 2024, a year-on-year increase of 50.22%, and a net profit attributable to shareholders of 17.94 million yuan, up 15.28% year-on-year [5]. - The company has a strategic focus on special optical devices, new materials, and equipment, aiming to strengthen its market position in both military and civilian sectors [5]. Financial Performance - In 2024, the company achieved a revenue of 331 million yuan, with a breakdown showing optical ring devices generating 124 million yuan (up 69.07% year-on-year) and new materials contributing 24.06 million yuan (up 15.60% year-on-year) [5]. - The gross profit margin for optical ring devices remained stable, while the overall gross margin decreased by 7.57 percentage points to 44.62% due to price adjustments in military products and changes in product mix [5]. - The company expects net profits for 2025-2027 to be 84 million, 122 million, and 150 million yuan, respectively, with corresponding P/E ratios of 47.4, 32.5, and 26.5 [5][6]. Market Position and Strategy - The company is enhancing its industrial synergy through the acquisition of "Shengyisheng," which will improve its production capabilities in optical gyroscope photon chip devices and expand its market reach [5]. - The strategic layout includes a focus on three growth curves: enhancing sensor solutions, developing energy transmission solutions, and advancing thermal management and next-generation optical communication [5]. Valuation Metrics - The current stock price is 32.48 yuan, with a total market capitalization of 4 billion yuan and a circulating market value of 3.1 billion yuan [2]. - The company has a return on equity (ROE) of 1.7% and a debt-to-asset ratio of 21.4% [2].