Jiangsu Hengtai Electric Co., Ltd.
Verified Manufacturer · 18 Years of Export Experience. Specialising in high-voltage power transformers and electrical equipment for buyers worldwide.
Two decades of precision manufacturing
Founded in 2006, the factory has grown into one of Eastern China's leading power-equipment producers, serving utility and industrial clients in over 40 countries.
Inside the manufacturing facility
32,000 m² of climate-controlled production space
Our main workshop houses winding, core assembly, tank welding and final test areas under a single roof. Temperature and humidity are monitored 24/7 to ensure consistent dielectric performance for every unit produced.
- Overhead cranes up to 50 tonnes
- Class-8 clean assembly bay for HV bushings
- Dedicated impregnation and drying ovens
Eight dedicated lines, end-to-end
From raw material to finished unit, every stage runs on calibrated equipment with full traceability.
Winding Line
12 CNC winding stations with automatic insulation wrapping.
Core Stacking
Step-lap silicon steel stacking with laser alignment.
Tank Assembly
Robotic welding cells with helium leak detection.
Final Testing
Full-routine and type tests per IEC / IEEE standards.
Tested at every step, certified by third parties
- Incoming material inspection (IQC) with spectrometer verification
- In-process quality control at 7 production checkpoints
- 100% routine electrical testing per IEC 60076
- Third-party witnessed tests available (SGS, TÜV, BV)
- Full traceability via QR-coded serial numbers
Internationally recognised certifications
Six layers of premium quality control
Business Verification
Legal registration, ownership, tax records and trade credentials independently verified by HJT.
Factory Audit
On-site assessment of facilities, workforce, equipment and management systems by our QA team.
Quality Inspection
AQL-based in-process and pre-shipment inspections aligned with international sampling standards.
Third-party Testing
Independent laboratory testing through SGS, TÜV and Intertek to confirm product performance.
International Certifications
ISO 9001, CE, UL, RoHS, REACH and KEMA certifications maintained and continuously monitored.
Export Compliance
Full documentation, customs and country-of-destination regulatory compliance handled end-to-end.
Scale built for global demand
Trusted by buyers across 40+ countries
Our Global Supply Network
Core product portfolio
Get in touch with the factory team
Visits welcome by appointment. Send an inquiry and our HJT-managed account team will respond within one business day.
- No. 88 Industrial Avenue, Hanjiang District, Yangzhou, Jiangsu Province, China 225000
- factory@hjt-international.com
- +852 0000 0000