Nantong Jianghai Capacitor Co. Ltd. (002484.SZ) manufactures and sells aluminum electrolytic capacitors, film capacitors, supercapacitors, electrode foils, and related materials and accessories; it researches, develops, and produces these electronic components for applications in industrial controls, power supplies, new energy systems including photovoltaics and wind power, white goods, smart home appliances, 5G communications, rail transit, data processing, automotive electronics, healthcare, consumer electronics, military, and aviation sectors. Founded in 1958 and headquartered in Nantong, Jiangsu Province, China, the company operates primarily in China with international exports and maintains production facilities supporting annual capacities exceeding 2 billion units; it holds state-level high-tech enterprise status and leads the Jiangsu Capacitor and Materials Industry Innovation Alliance. Recent developments include completion of intelligent manufacturing upgrades for new energy vehicle and 5G film capacitor production lines in 2023, plans to jointly establish a research institute in late 2024, an equity buyback program completed in April 2025 repurchasing 2.13 million shares for CNY 51 million, and sustained R&D investments around 3-5% of revenues focused on capacitor materials industrialization, sustainability initiatives, and expansion into renewable energy and AI-driven supercapacitor demand.