Pure Oxygen-Free Copper
Grade T1 electrical oxygen-free copper. Conductivity not less than IACS 100% — well above GB/T 3956.
0.00%
DONGJIN · SINCE 2012
Powering the city.Building the industrial future.
14 years of medium and low voltage cable manufacturing. Oxygen-free copper conductors, cross-linked polyethylene insulation, every meter pulse-tested.
10 kVTop Voltage Class
CCC · ISO 9001Certified
120,000 kmAnnual Capacity
Four Hard Edges
Why Dongjin
From copper to coil — 9 QC gates · 17 performance tests, per meter.
Deep Specialization
Rooted in Yunnan since 2012, serving thousands of grid, rail-transit, real estate and mining projects.
0years
Stable Capacity
50+ production lines covering the full range from 1 kV to 10 kV.
0km / yr
Reliable Quality
Zero major batch recalls since inception. Shortlisted China Southern Power Grid supplier for 8 consecutive years.
0recalls
REAL FACTORY
53,605 m²
Company-owned production base
Yunnan · Taoyuan Industrial Park, Chuxiong
Inside the factoryOne Copper Line
14 years, drawn out.
A single copper core — stretched from 2012 to today, threading every milestone.
Dongjin Cable founded
Yunnan Dongjin Cable Group was officially established, launching a modern wire and cable manufacturing journey.
CCC certification achieved
Obtained national compulsory product certification; quality management systems steadily improved.
Entered grid supply chain
Became a qualified Yunnan Power Grid supplier, serving key power projects across the region.
Brand recognition
Named a top-ten well-known brand for innovation and quality excellence in China’s wire and cable industry.
National high-tech enterprise
Recognized as a national high-tech enterprise; innovation capabilities continued to strengthen.
100-mu industrial park launched
Wire and cable and electrical cabinet manufacturing project included in provincial key support programs.
Medium & high voltage upgrade
Completed 6–35 kV XLPE power cable lineup for a fully upgraded product portfolio.
Integrated cable manufacturing base
Continuing R&D, production and sales to build a leading wire and cable brand enterprise.
2026 → ∞