About Us
About Hengsheng
Nantong Hengsheng Electronic Equipment Factory
Founded in 2003, Nantong Hengsheng Electronic Equipment Factory is located in Nantong, Jiangsu Province, specializing in capacitor test power supplies and electronic equipment manufacturing. Our main products are capacitor experimental power supplies — conventional capacitor charge-discharge test modules, capacitor durability test power supplies, ripple power supplies, smart-panel power supplies, integrated machines and high-precision programmable power supplies. We accept custom design of non-standard models within 1000V / 100A.
Our products are widely used in capacitor manufacturing, aging and formation machine integration, and laboratory testing scenarios, serving industry leaders including AiHua Group, Jianghai Group, CRRC Zhuzhou Electric Locomotive Research Institute and more.

Mission
Make every kilowatt-hour reliable — guarding the lifespan baseline for power electronics
Vision
To be a global leader in capacitor test equipment
Scope
Business Scope
- 01Electronic (electrical) physical equipment manufacturing
- 02Instrumentation sales and manufacturing
- 03Software development
- 04Optical instrument manufacturing and sales
- 05Sports goods and equipment manufacturing
Milestones
Development History
- 2022
First Invention Patent Published
"A Durability Test System for Capacitors" (CN202210669609.2) published, establishing the durability test technology roadmap.
- 2023
High-Temperature Load Test Patent
"An Intelligent Current-Sharing High-Temperature Load Test System for Capacitors" (CN202310137840.1) published, covering high-temperature aging scenarios.
- 2024
Charge-Discharge & AC/DC Superposition Patents
"AC/DC Superposition Circuit for Capacitor Durability Test Power Supply" and "Charge-Discharge Test Circuit for Capacitors" published successively, completing the technology portfolio.
- Today
5 Invention Patents, Serving Industry Leaders
Products cover ripple / charge-discharge / durability / inspection scenarios, serving 15+ leading companies including AiHua, Jianghai and CRRC Zhuzhou, accepting custom orders within 1000V / 100A.
Capability
Manufacturing Capability
Capacitor Test Power Supplies
Charge-discharge, durability, surge and ripple test power supplies covering standard and custom models.
High-Precision Programmable Power
Linear programmable power with high output accuracy and low ripple (model-dependent, from ≤5mV to ≤500mV), MTBF 100,000 hours.
Inspection Systems
Explosion-proof, leakage current and withstand voltage test systems for production lines.
Custom Non-Standard Models
Custom power supplies within 1000V / 100A for aging and formation machines.
Talk to an Engineer
Get selection advice and a custom proposal within 24 hours.