Xi'an, Shaanxi, China · OEM / ODM Transformer & Power Supply Manufacturer [email protected]  |  ✔ Intertek-Verified Supplier
Shaanxi Zelqo Power Co., Ltd. Manufacturing Facility
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Company Profile & Manufacturing Excellence

Intertek-verified custom manufacturer delivering precision transformers, SMPS, and power conversion solutions for international OEM and ODM buyers.

Enterprise Overview

Shaanxi Zelqo Power Co., Ltd.

Verified custom manufacturer combining R&D expertise, automated winding, and full-chain quality control.

Verified Supplier

On-site audited and certified by Intertek as a Custom Manufacturer. Operations, factory lines, legal status, and export capabilities meet stringent global procurement benchmarks.

  • Third-Party AuditorIntertek Verified
  • Operational StatusManufacturer & Exporter
  • Customer Rating4.8 / 5.0 (33+ reviews)
  • On-Time Dispatch Rate100.0%

Production Line & Scale

Modernized production lines equipped with 28 precision manufacturing machines, including CNC winding machines, circular winding units, automated wrappers, and hydraulic crimpers.

  • Dedicated LinesSelf-Owned Line
  • Core Equipment Count28 Modern Units
  • Export Experience5+ Years Worldwide
  • Main Shipping PortQingdao Port, China

Engineering & OEM / ODM

Full-stack customization: design from electrical specs, sample-based replication, CAD drawing modifications, custom bobbin/core selection, logo branding, and retail packaging.

  • Customization LevelFull ODM / OEM
  • Sample PrototypingAvailable with Test Data
  • Average Response≤ 2 Hours
  • Supported PaymentT/T, Trade Assurance
Manufacturing Stages

Verified Production & Craftsmanship

Standardized shop-floor operations ensuring consistent electrical and mechanical tolerances across every batch

Coil Winding Process
01Winding
Precision Wire & Core Cutting
02Cutting
Core Insulation Application
03Core Insulation
Primary Coil Winding
04Primary Winding
Terminal Wiring & Lead Soldering
05Wiring Process
In-Line Testing
06Testing
Semi-finished Products Electrical Test
07Semi-finished Test
100% Full Load Burn-in Aging Test
08Aging Test
Internal Protective Packing
09Packing
Export Pallet & Carton Packing
10Export Packing
Precision Equipment

Advanced Machinery & Tooling

State-of-the-art CNC coil winders and tooling fixtures ensuring repeatable turns, tight layer packaging, and minimum leakage inductance

CNC Multi-Spindle Winding Machine
◆CNC Winding Machine
Circular Toroidal Core Winding Machine
◆Circular Winding Machine
Industrial Transformer Winding Machine
◆Winding Machine
Insulation Tape Wrapping Machine
◆Wrapping Machine
Precision Cutting Instrument
◆Cutting Instrument
Automatic Tubing and Pipe Cutter
◆Pipe Cutter
High Precision Terminal Crimping Machine
◆Crimping Machine
Dedicated Assembly Fixture
◆Fixture
Zero-Defect Commitment

Inspection & Quality Control Instruments

Comprehensive multi-stage testing: verifying turns ratio, inductance, winding resistance, dielectric breakdown, and thermal stability

Finished Goods Final Inspection Station
✔Finished Goods Inspection
Digital Power Meter for Wattage and Loss
✔Digital Power Meter
Programmable AC Power Source
✔AC Power Source
LCR Digital Bridge Tester for Inductance & Q Factor
✔LCR Digital Bridge Tester
Micro-Ohm DC Low Resistance Tester
✔DC Low Resistance Tester
Impulse Winding Surge Tester
✔Impulse Winding Tester
High Voltage Hi-pot Dielectric Withstand Tester
✔Hi-pot Tester
Independent Verification

Intertek On-Site Facility Audit Summary

Audited & Confirmed in Xi'an, Shaanxi, China

Quality Management & Traceability

Raw Material Records: Verified incoming quality inspection logs for copper wire, ferrite cores, silicon steel, and bobbins.
In-Process Control: Real-time checks during core insulation, primary winding, and wire routing.
Defect Isolation: Systematic isolation mechanism tracing defective coils directly back to the technician and machine.
Final Lot Testing: 100% dielectric hi-pot safety testing and full-load aging tests before export boxing.

Global Trade & Service Strengths

Top Export Markets: Eastern Europe (16%), North America (15%), Mid East (15%), Western Europe (13%), South America (12%).
Fast Engineering Turnaround: Inquiry reply within ≤ 2 hours with experienced magnetic design engineers.
Reorder Loyalty: 20.0% repeat order rate (7% higher than industry benchmark).
Flexible Logistics: Direct container and LCL consignments dispatched from Qingdao Port or air shipped worldwide.
Regulatory Compliance

International Certifications & Reports

Ensuring your imported power components strictly comply with CE, FCC, and Low Voltage Directive (LVD) standards

Safety & Voltage

CE Low Voltage Directive (LVD)

Certified for electrical safety compliance under EU directives, preventing insulation breakdown, shock risks, and fire hazards for commercial equipment.

Certificate No: BYS2203100156LK
Scope: Low-Frequency Transformers
Validity: 03/16/2022 – 03/16/2027
Electromagnetic Compatibility

FCC Verification (USA)

Complies with FCC Part 15 EMI/EMC standards, verifying suppression of spurious electromagnetic noise to safeguard radio spectrum and communications.

Certificate No: DL-240909021EC
Scope: Switching Power Supplies & Adapters
Validity: 09/14/2024 – Permanent
European Conformity

CE EMC / LVD & EU DOC

Official Declaration of Conformity and CE verification affirming legal distribution rights across 31 countries in the European Economic Area.

Certificate No: LTC2507015S01 / LTC2507015E01
Scope: Power Adapters & Industrial SMPS
Validity: Up to 2030 / 2031

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