Nantong Jianghai Capacitor Co., Ltd. operates in the electronic components manufacturing industry, specifically in the capacitor manufacturing sector. The company is a high-tech enterprise engaged in the research, development, production, and sales of capacitors and related materials and instruments. It is the leading unit of the Jiangsu Capacitor and Material Industry Technology Strategic Innovation Alliance and has consistently ranked among the top in key indicators in the national capacitor industry for twenty-six consecutive years.

Jianghai-branded capacitors, as a national brand with independent intellectual property rights and its own brand, have successfully entered the international high-end mainstream market through the company's channels. The company holds the titles of Famous Brand Product in Jiangsu Province and China Famous Trademark. Additionally, the company serves as the Vice Chairman Unit of the China Electronic Components Industry, the Deputy Leader Unit of the Working Group on China Super Capacitor Standards, and the main drafting unit for the National Standards on Polymer Solid Capacitors.