Step 01 
Raw Material Control
Certified oxygen-free copper rods and flame-retardant PVC/TPE granules inspected upon arrival.
Enterprise Manufacturing
Direct Factory Solutions for Custom Power Cords & Extension Leads
At Ningbo Sykra Technology Co., Ltd., our specialised cable and cord assembly division delivers high-durability power connection solutions engineered to stringent EU electrical standards (CEE 7/4 Schuko, CEE 7/7 hybrid, and IEC 60320 terminations). Operating from our TÜV-verified 5,200 m² industrial facility, we maintain vertical control over pure copper rod processing, conductor extrusion, terminal crimping, and precision overmoulding.
Whether you require standard H05VV-F PVC cables, oil-resistant rubber cords (H07RN-F), or OEM custom-moulded power supply lines, our production infrastructure delivers optimal electrical conductivity, certified flame retardancy, and dependable mechanical bend longevity.
100% High-Voltage Tested
Zero-defect dielectric withstand testing across entire runs.
Custom Lengths & Sleeves
Flexible colour, stripped ends, coiled, or braided jackets.
Full Compliance Files
Complete CE, RoHS, VDE, and GS declaration documentation.
Direct OEM/ODM Supply
Fast sampling, bespoke strain reliefs, and custom branding.
Manufacturing Discipline
In-House Power Cord Production Process
Every cord set transitions through a rigorous step-by-step manufacturing cycle to guarantee mechanical integrity, conductor safety, and consistent finish.
Step 02 
Injection Molding
Heavy-duty injection molding machines press ergonomic plug heads, durable cord grommets, and socket bodies.
Step 03 
Terminal Welding
Precision spot welding and terminal crimping ensuring low resistance and enduring mechanical joins.
Step 04 
Laser Marking
Permanent trace printing of electrical ratings, model numbers, traceability batch codes, and OEM logos.
Step 05 
Assembly Operation
Controlled manual and semi-automated cable assembly with integrated strain reliefs and grounding checks.
Step 06 
Inline Inspecting
Continuity testing, polarity verification, and insulation skin analysis conducted on 100% of finished assemblies.
Step 07 
Export Packaging
Moisture-proof bundling, branded carton packing, and barcode labeling ready for sea, rail, or air transit.
Step 08
Finished Products
Staged warehouse inventory ready for final third-party pre-shipment sign-off and container consolidation.
Testing & Equipment Infrastructure
In-House Reliability Lab & Heavy Machining
To eliminate electrical and fire risks, Ningbo Sykra Technology Co., Ltd. operates a comprehensive internal testing facility verifying cords across extreme physical and electrical stress benchmarks.
Automated Welding System
Provides uniform, high-amperage joins on conductor lines to prevent thermal hot spots and internal loose connections.
High-Speed Laser System
Executes clear, wear-resistant compliance markings, VDE ratings, and custom customer branding without damaging outer jackets.
Injection Molding Unit
High-tonnage hydraulic presses for seamless plug overmoulding, integrated strain-relief boots, and electrical plug inserts.
Synchronized Assembly Line
Lean assembly lines with standard operating protocols ensuring low cycle times, repeatable quality, and rapid volume scale.
Conductor Resistance Tester
Accurately measures pure copper core resistance down to milliohms, ensuring minimal voltage drop and full 16A continuous current capacity.
High Voltage Tester
Applies high AC dielectric potentials to verify jacket insulation resistance, eliminating electrical breakdown risks.
Overload & Endurance Tester
Monitors heat dissipation, cycle endurance, and current handling under sustained 3,680W - 4,000W working electrical loads.
Safety Regulation Tester
Comprehensive electrical certification validator verifying compliance against European LVD 2014/35/EU and international norms.
Climate Test Chamber
Simulates extreme temperature (-40°C to +85°C) and relative humidity aging to ensure jackets and connectors never crack.
Glow-Wire (Hot Wire) Tester
Validates flame-retardant thermoplastics against 750°C / 850°C glow-wire ignite standards (IEC 60695-2-11) for consumer peace of mind.
Plan Your Custom Power Cord Production
Consult with our engineering team for sample requests, custom pin assignments, specialized cord lengths, or full container pricing.
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