Vertically Integrated From Raw Steel to Tested Cabinets
The supplied company materials state a 42,000 m² site area and list 32 production-equipment entries across fabrication, handling and support equipment.
Six Controlled Stages of Manufacturing
A tightly managed workflow ensures consistency, quality and traceability on every order.
Sheet Metal Fabrication
CNC punching, laser cutting, shearing and bending with dimensional tolerance ≤ ±1mm.
Busbar Processing
High-purity electrolytic copper (≥98% IACS) cut, punched, bent and tin-plated at contact faces.
Surface Treatment
Pickling and phosphating followed by epoxy powder electrostatic coating with a film thickness of at least 60 μm and grade 1 adhesion.
Assembly & Wiring
Standardized primary & secondary wiring with hydraulic crimping and 100% interchangeable drawers.
Testing & Inspection
Mechanical, electrical and dielectric testing at defined hold points before release.
Packaging & Delivery
Standards-compliant packaging with full documentation, serial numbers and traceability.
32 Listed Production-Equipment Entries
CNC Turret Punch Press
Precision multi-hole punching
CNC Press Brakes
Sheet-metal bending
Fiber Laser Cutting Machine
Sheet-metal cutting
Busbar Processing Center
Copper busbar shear/punch/bend
Electrostatic Powder Coating
Durable surface finishing
Laser Marking Machine
Permanent nameplate marking
Comprehensive In-House Electrical Testing
The listed in-house test equipment supports electrical performance and safety checks before products leave the factory.
- Power-frequency withstand voltage testing (up to 150 kV)
- Transformer ratio, capacity and load testing
- Microcomputer relay protection testing
- DC high-voltage and leakage-current testing
- Insulation and DC resistance measurement
- Loop and contact resistance testing
- Residual-current and dielectric-strength testing
- HV/LV switchgear energization test bench
A Three-Tier Quality Control System
The supplied company materials describe quality checks from incoming materials through manufacturing and factory inspection.
Incoming Material Control
Every purchased component requires certificates and test reports; each batch is sampled and non-conforming lots are returned in full.
In-Process Control
Five defined hold points require written QC release — from sheet metal to busbar, wiring and final assembly.
Factory & Type Testing
The supplied company materials describe routine factory testing and state that type testing has been completed; report documents were not supplied for publication.
Customer-Supplied Footage
Five original videos supplied by Jiangsu Changhui Electric, shown with neutral labels because the supplied materials do not verify a specific product model or process for each file.
Customer-supplied company video 1
A customer-supplied vertical clip of cabinet wiring work. The original audio contains workshop ambience and handling sounds; local Whisper analysis found no meaningful speech.
Customer-supplied company video 2
A brief customer-supplied view of electrical cabinets. The original audio contains short workshop ambience; local Whisper analysis found no meaningful speech.
Customer-supplied company video 3
A customer-supplied vertical clip of work inside a cabinet. The original audio contains workshop ambience and light work sounds; local Whisper analysis found no meaningful speech.
Customer-supplied company video 4
A longer customer-supplied clip of cabinet work and nearby test equipment. The original audio is continuous workshop ambience without meaningful speech.
Customer-supplied company video 5
A customer-supplied horizontal pan across cabinets on a workshop floor. The original audio contains changing workshop ambience; local Whisper analysis found no meaningful speech.