Zhejiang Harlon Electronic Co., Ltd. Manufacturing Facility
Zhejiang Harlon Electronic Co., Ltd. Plant and Production Floor
Verified Strength Factory
Enterprise Overview

Engineering Excellence in Power Conversion Since 2007

Zhejiang Harlon Electronic Co., Ltd. is an established Chinese OEM/ODM manufacturer focused on the research, development, and mass manufacturing of industrial switching power supplies, DIN rail units, DC-DC converters, and waterproof LED drivers. Headquartered in the Marine Economic Development Zone of Wenzhou, Zhejiang, our enterprise operates across 10,000 square meters of production facilities.

Under strictly audited ISO 9001 management protocols and authenticated on-site by SGS Group, we maintain end-to-end quality control from bare board placement to final burn-in aging. Serving global engineering firms, system integrators, and equipment manufacturers, we offer both standard catalog selections and tailor-made electrical engineering services.

Total Floorspace 10,000 m² modern manufacturing workshop
Quality Audit ISO 9001 certified & SGS on-site assessed
In-House Testing 13+ specialized lab testing instruments
Production Scale 10+ automated & semi-automated lines
19+ Years in Industry
10,000 m² Factory Area
100% Full-Load Burn-in Aging
6+ Dedicated QA Inspectors
4.8 / 5.0 Buyer Rating Score
Production Flow

9 Controlled Steps of Power Supply Manufacturing

To guarantee stability and trace-level consistency across high-volume production, every unit manufactured at Zhejiang Harlon Electronic Co., Ltd. follows 9 standardized, verified processing stages.

Step 01 Incoming Raw Materials Inspection

Incoming Raw Materials (IQC)

Strict verification of critical semiconductors, high-temperature electrolytic capacitors, pure copper magnetics, and flame-retardant PCB substrates.

Step 02 Surface Mount Technology Line

High-Speed SMT Placement

Automated SMD component placement and precision solder paste reflow, ensuring optimal thermal relief and defect-free micro-soldering.

Step 03 Through-Hole Component Inserting

Automatic & Manual Inserting

High-precision auto-insertion machines combined with skilled hand-insertion for heavy inductors, transformers, and power MOSFETs.

Step 04 Wave Soldering and PCB Welding

Wave Soldering & Welding

Controlled dual-wave soldering chambers create robust, vibration-resistant electrical joints, followed by manual de-drossing and touch-up.

Step 05 Output Voltage Calibration and Adjusting

Voltage Adjusting & Calibration

Fine trimmer calibration under rated primary inputs to verify accurate voltage outputs (5V, 12V, 24V, 36V, 48V DC) and current thresholds.

Step 06 Power Supply Mechanical Assembly

Housing & Mechanical Assembly

Integration into anti-corrosion perforated aluminum cases, TS-35 DIN rail housings, or waterproof IP67 silicone potting encapsulation.

Step 07 Power Supply Burn-in Aging Test

100% Loaded Burn-In Aging

Full-load continuous thermal run inside elevated-temperature aging rooms to eradicate infant mortality and screen out early component failures.

Step 08 Final Electrical and Hi-Pot Testing

Comprehensive Final Testing

Rigorous test protocols verifying line/load regulation, high-voltage insulation withstand (Hi-Pot), ripple noise, and short-circuit protection.

Step 09 Packaging and Shipment Preparation

Export Packaging & Labelling

Custom barcode application, moisture barrier bagging, reinforced shock-resistant cartons, and pallet wrapping for secure overseas freight.

Factory Capability

Automated Equipment Behind Consistent Production

Our continued investment in automated machinery guarantees tight dimensional tolerances, reproducible soldering quality, and reliable lead times for volume OEM orders.

Wave Soldering Machine

Wave Soldering Machine

Multi-zone temperature regulation preventing thermal shock while creating uniform lead-free solder fillets on high-density power boards.

Automatic Inserting Machine

Automatic Inserting Machine

High-speed radial and axial lead insertion equipment with optical verification, eliminating human placement deviations.

SMT Placement Machinery

Precision SMT Machine

High-accuracy surface mount pick-and-place systems capable of managing miniature passives and complex power management IC packages.

Automatic Double Liquid Glue Machine

Automatic Double Liquid Glue Machine

Metered two-component potting dispensing systems for IP67/IP68 waterproof power supplies and encapsulated drivers.

Automatic Packaging Machine

Automatic Packaging Machine

Automated box erection, sealing, and protective shrink packing to maintain cosmetic perfection during transoceanic transit.

Modern Continuous Production Line

Continuous Production Line

Ergonomic, ESD-safe flow lines configured for rapid model changeover, supporting both high-mix small-batch and volume production.

SMT Automatic Assembly Line Equipment

SMT Line Equipment

Integrated loader, screen printer, reflow oven, and cooling conveyors minimizing handling and thermal stress on substrates.

Automatic Labelling Machine

High-Precision Labelling Machine

Automated thermal-transfer labeling for custom OEM model numbers, serial barcodes, and international certification marks.

Automatic Assembly Line Equipment

Automated Assembly Stations

Torque-controlled automated screwdriving, terminal mounting, and casing crimping stations ensuring uniform mechanical integrity.

Quality Assurance

In-House Reliability & Compliance Testing Laboratory

Reliability cannot be inspected in at the very end; it must be built and validated. Zhejiang Harlon Electronic Co., Ltd. operates 13 specialized testing systems matching certification lab standards to verify safety, EMC, and thermal endurance.

Power Supply Aging Tester

Aging Tester

Loaded Burn-in Analysis

Programmable electronic loads executing thermal cycle stress tests under full operating ratings.

High and Low Temperature Heat Chamber

Heat & Cold Chamber

Thermal Stress Testing

Validating cold boot performance down to -40°C and thermal derating profiles up to +85°C.

Lightning Surge Generator

Surge Generator

Surge & Transient Immunity

High-voltage line-to-line and line-to-earth pulse injection ensuring compliance with IEC surge standards.

Digital Storage Oscilloscope

Digital Oscilloscope

Ripple & Noise Verification

Precision 20MHz bandwidth bandwidth-limited evaluation of dynamic transient responses and ripple.

Vibration Measurement Instrument

Vibration Instrument

Mechanical Structural Rigidity

3-axis sinusoidal and random vibration simulations matching DIN rail and transportation conditions.

Shielding Test Room

Shielding Room

RF Attenuation Chamber

Shielded enclosure suppressing ambient EMI noise to achieve authentic radiation baseline checks.

Earth Resistance Tester

Earth Tester

Protective Ground Continuity

High-current ground bond testing confirming chassis safety impedance under 0.1 ohm.

EMI Test Receiver

EMI Test Receiver

Conducted Emission Audit

Spectral measurement verifying power supplies meet CISPR/EN 55032 Class B emission limits.

Comprehensive Performance Tester

Performance Tester

Multi-Factor Automation

Synchronous verification of efficiency, power factor, line regulation, and turn-on delay times.

DC Electronic Load

DC Electronic Load

Transient Dynamic Stepping

Programmable CV/CC/CR load stepping to measure voltage stability during sudden step loads.

High Voltage Test System

Hi-Pot Test System

Dielectric Breakdown Check

Primary-to-secondary high voltage withstand tests (up to 3.75kVAC) verifying insulation barriers.

Automatic Testing System

Auto Test System (ATS)

Computerized Data Logging

Batch test fixtures recording electrical parameters directly into barcode traceability records.

Optical Inspection Equipment

Optical Inspection (AOI)

Solder & Polarity Verification

Automated visual analysis screening component misalignments, bridging, or insufficient wetting.

Certifications & Conformity

Global Compliance for Frictionless Market Entry

Our power supplies are designed and built to comply with global electrical safety, environmental, and electromagnetic compatibility standards.

ISO 9001:2015

Certified Quality Management System encompassing design, procurement, manufacturing, and inspection.

System Certified

CE Marking

Conforming with Low Voltage Directive (LVD) and EMC Directives for lawful entry across the EEA.

EMC & LVD Verified

RoHS Directive

Environmentally safe manufacturing restricting hazardous substances (Pb, Cd, Hg, CrVI, PBB, PBDE).

Hazard-Free

FCC & CCC

Compliant with FCC Part 15 EMI thresholds for North America and China Compulsory Certification standards.

Audited
Export Coverage

Established International Trade Channels

Exporting to OEM engineers and distributors across five continents with complete export documentation and sea/air logistics support.

17% North America
16% South America
15% Eastern Europe
6% Central America
46% Asia & Domestic
Direct Factory Communication

Work Directly with Zhejiang Harlon Electronic Co., Ltd.

Discuss your electrical specifications, custom casing dimensions, voltage tolerances, and delivery schedules directly with our power supply engineering specialists.

Send an Inquiry