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About us

Suzhou Jiuke Supercapacitor Technology Co., Ltd.,

Founded in April 2005, is a professional capacitor enterprise integrating R&D, sales and technical services. Rooted in the application field of power electronics technology, we are committed to providing safe, efficient and reliable core component solutions for high-end equipment and new energy industries.
The company’s main products include power film capacitors, supercapacitors, lithium-ion capacitors, sodium-ion batteries and other product series. Our products are widely applied in key sectors such as industrial energy conservation and environmental protection, power systems, rail transit, medical equipment, electric vehicles, high-end equipment, military industry and new energy, gaining widespread market recognition for stable and dependable performance.





Backed by continuous technological innovation and craftsmanship accumulation, we have built a product system with strong core competitiveness:


Double-sided Metallized Dual-electrode Film Capacitors
Featuring 60% smaller volume than conventional products and 5 times higher overcurrent resistance, they deliver higher power density and superior electrical performance.

Shell-less Dry-type Capacitors for Rail Transit Power Systems
With outstanding explosion-proof and flame-retardant properties, they effectively resolve the reliability challenges of traditional capacitors under high voltage and harsh working conditions. The company has become a major domestic supplier of shell-less dry-type capacitors for high-speed trains, EMUs, locomotives, subways and other rail transit facilities.

High-energy-density Pulse Capacitors
As one of the early domestic enterprises mastering core technologies and mature production processes for such products, we can meet the stringent operating requirements of high-end scenarios including special equipment and pulse power applications.

Frequently Asked Questions

Yes—we offer free samples for qualified customers, with freight collect.

Yes—we provide custom specifications for capacitance, voltage, size, pins, and terminals.

We main products include power film capacitors, supercapacitors, lithium-ion capacitors, sodium-ion batteries and other product series.

Our capacitors are widely used in rail transit, new energy vehicles, energy storage, PV/wind power, power supply, aerospace, and military industries.

Standard products: 7–15 days. Customized products: 15–25 days based on specific requirements.


Jiuke Supercapacitor

Moving forward, the company adheres to the core principle of technology-driven development and quality-oriented operation. We will continuously advance the domestic substitution of high-end capacitors, and provide solid support for the industrial development of new energy, rail transit and high-end equipment sectors.

Cooperation

Our corporate business philosophy: Integrity-oriented, Technological Innovation, Quality First, Customer Satisfaction Management philosophy: Strive for Superior Quality, Pursue Product Innovation, Practice Pragmatic Management, Deliver Optimal Service Corporate tenet: Sincerity and Perfection, Harmonious Win-Win Cooperation


Need help?
Email us at zhangjiabao@jiuketech.com.


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