Enterprise Overview

Verified Manufacturing Power for Global B2B Supply Chains

Zhejiang Harlon Electronic Co., Ltd. operates a high-precision manufacturing facility in Wenzhou Marine Economic Development Zone, certified under ISO 9001 and rigorously inspected on-site by SGS Group.

SGS Verified Supplier 17+ Yrs Track Record
4.8
Based on 21 Verified Buyer Reviews
Facility Location Wenzhou, Zhejiang, China
Total Plant Area 10,000 m²
On-Site Workforce 68 Authenticated Staff
Audited Supply Partners 31 Qualified Raw Suppliers
Annual Output Value US $5M - $10M
Audited parameters correspond to independent on-site assessments administered under strict third-party factory inspection protocols.
Response Time
≤ 3 Hours
Rapid inquiry processing with dedicated engineering support across all global timezones.
25% Faster Than Industry Average
On-Time Dispatch
96.7%
Rigorous ERP batch tracking ensures mass production orders hit target cargo ship schedules.
Higher Than 93.6% Category Benchmark
Dispatch Lead Time
8.2 Days
Average processing from production release to outbound port dispatch for standard catalog models.
30% Shorter Turnaround
Tier-1 Buyers Served
42+ Accounts
Regular contract supplier to key enterprise equipment builders and multinational automation brands.
179% Above Category Average
Export Revenue
$5M - $10M
Annual foreign trade volume across 30+ countries throughout North America, Europe, and Asia.
SGS Authenticated
Industry Experience
19 Years
Continuous specialization in power switching circuits, planar transformers, and thermal design since 2007.
Stable Sourcing Partner
Engineering & Customization

Custom Power Supply Design & Precision Manufacturing

Whether adapting an existing SMPS platform to custom pinouts or engineering an entirely new AC/DC topology from schematic design to mold creation, our R&D engineering group turns requirements into verified hardware.

Full Customization

Complete custom circuit layout, component dimension constraints, specific IP67 aluminum extrusion tooling, and specialized EMI filter modules engineered from the ground up.

Sample-Based Processing

Send your physical prototype or legacy benchmark unit. We perform reverse electrical analysis, component derating assessments, and manufacture drop-in replacements with improved efficiency.

Drawing & Spec Custom

We work directly with customer CAD/Gerber schematics, thermal heat sink specifications, custom wire harnesses, and targeted DC voltage trim ranges (3.3V, 5V, 12V, 24V, 36V, 48V, 72V, up to 110V).

OEM Label & Packaging

Private label printing, customized silkscreen barcoding, customer model coding, multi-language instruction manuals, and drop-test certified retail or bulk master export packaging.

Controlled Production Flow

End-to-End Manufacturing: 9 Standardized Quality Gates

From component verification at warehouse intake to automated assembly and loaded thermal aging, every single power supply follows an ISO 9001 governed path to zero out infant mortality.

Gate 01 Raw Materials Incoming Quality Control

Raw Materials IQC

100% incoming verification of electrolytic capacitors, MOSFETs, transformers, magnetic cores, and FR-4 PCB substrates against strict tolerance thresholds.

Component Testing Bench
Gate 02 SMT High Precision Surface Mount Technology

SMT Placement

High-speed surface-mount placement lines ensuring micron-level accuracy for passive resistors, IC micro-controllers, and planar diodes prior to multi-zone reflow.

SMT Automatic Assembly Line
Gate 03 Through-Hole Inserting Process

Automatic Inserting

Dual insertion workflow utilizing automatic high-velocity insertion equipment for heavy choke inductors, terminal blocks, and primary power capacitors.

Automatic Inserting Machine
Gate 04 Wave Soldering and PCB Welding

Wave Soldering & Welding

Nitrogen-assisted wave soldering machines produce clean, void-free solder fillets, followed by manual IPC-A-610 certified joint touch-up and inspection.

Wave Soldering Machine
Gate 05 Electrical Output Voltage Adjusting

Output Voltage Calibration

Technicians calibrate the onboard potentiometer trims under rated loads to ensure precise output voltage (±1%) and evaluate dynamic line and load regulation.

DC Electronic Load Station
Gate 06 Chassis and Potting Assembly

Mechanical & Potting Assembly

Precision casing integration, thermal silicone pad placement, automated double liquid potting for waterproof LED models, and protective ground bonding.

Auto Double Liquid Glue Machine
Gate 07 100% Full Load High-Temperature Aging

100% Full-Load Burn-In Aging

Continuous loaded burn-in under 45°C–50°C elevated temperature conditions for a full 4–8 hours to eliminate latent infant mortality defects.

High-Density Aging Tester
Gate 08 Final Functional and Safety Testing

Full ATE Electrical Testing

Every single manufactured unit undergoes computerized ATE verification: Hi-pot insulation (3000VAC), leakage current, ripple & noise, and short-circuit trip tests.

Automatic Testing System
Gate 09 Automated Labeling and Export Packaging

Automated Packaging & OQC

Automated precision label affixing, barcode registration, shock-absorbent cushioning, and heavy-duty 5-ply export carton packing ready for container loading.

Auto Packaging & Labelling Machine
Quality Assurance Lab

13 In-House Test Systems: Certified Accuracy

Our quality control department is staffed by 6 dedicated QA/QC specialists utilizing the same advanced instrumentation found in international testing bodies to validate EMC, surge, insulation, and environmental reliability.

Power Supply Aging Tester

Aging Tester

Loaded burn-in testing to screen thermal stability and early-stage field failures.

High and Low Temperature Heat Chamber

High & Low Temp Chamber

Evaluates thermal stress across operating profiles from -40°C to +85°C.

Lightning Surge Generator

Surge Generator

Simulates grid line surges up to 4kV/6kV to verify over-voltage immunity.

Digital Storage Oscilloscope

Digital Oscilloscope

High-bandwidth transient analysis for peak-to-peak ripple and noise verification.

Vibration Measurement Instrument

Vibration Instrument

Tests structural integrity against harsh transit and industrial vibrations.

Shielding Test Room

Shielding Test Room

Anechoic RF isolation chamber for EMI and radiated electromagnetic screening.

Earth Resistance Tester

Earth Resistance Tester

Ground-continuity and electrical bonding tests to prevent shock hazards.

EMI Test Receiver

EMI Test Receiver

Analyzes conducted emissions ensuring compliance with EN 55032 Class B.

Comprehensive Performance Tester

Performance Tester

Multi-parameter load verification including power factor, PF, and input wattage.

DC Electronic Load

DC Electronic Load

Programmable dynamic loading to analyze step response, overshoot, and recovery.

High Voltage Test System

High Voltage System

High-potential dielectric withstand testing (primary-to-secondary breakdown).

Automatic Testing System

Automatic Testing System

Computerized automated electrical parameter recording for quality traceability.

Optical Inspection Equipment AOI

Optical Inspection (AOI)

Automatic visual solder joint analysis, component polarity, and bridge checks.

Compliance Credentials

Audited & Certified for Global Market Access

Import with absolute peace of mind. Our power supply designs and manufacturing plant hold current, traceable certificates verified by accredited global bodies.

Management Standard

ISO 9001:2015

Cert # 20224Q20764R0S

Covers design, development, production, assembly, and testing of AC/DC switching power supplies and drivers.

Valid: 2024 - 2027
EU Conformity

CE Mark (LVD / EMC)

Cert # ZKT-241121L16231C

Full European Economic Area legal compliance meeting EN 62368-1 electrical safety and EN 55032 electromagnetic directives.

Valid: 2024 - 2027
Environmental Directive

RoHS 2.0 Compliant

Cert # ZKT-241121L16234C

Certified restriction of lead (Pb), cadmium (Cd), mercury (Hg), hexavalent chromium, and phthalate hazardous substances.

Valid: 2024 - 2027
US & Domestic Regs

FCC & CCC Certified

FCC # ZKT-241121L16233C

Complies with FCC Part 15 Class B emissions for United States distribution and mandatory CCC safety certification for China.

Valid: 2024 - 2027
Export Logistics

Global Market Distribution & Flexible Commercial Terms

Serving industrial OEMs, regional electronics distributors, and lighting contractors across key industrial hubs worldwide.

Main Export Regions

Exporting reliably for 18 years. Our engineering designs are tailored to local grid voltages (110VAC/220VAC/277VAC/480VAC) and regional environmental conditions.

Domestic China Market24%
North America (USA & Canada)17%
South America (Brazil, Chile, etc.)16%
Eastern Europe15%
Central America6%
Others (Asia, Middle East, Western Europe)22%

International Trade Terms

We work with tier-one shipping lines and express couriers to guarantee transparent lead times and competitive CIF/FOB freight handling.

Accepted Delivery Terms FOB, CFR, CIF, EXW, FAS, CIP, FCA, CPT, DEQ, DDP, DDU, Express Delivery
Nearest Shipping Ports Ningbo Port, Shanghai Port, Guangzhou Port
Accepted Currencies USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, CHF
Accepted Payment Methods T/T (Telegraphic Transfer), L/C (Letter of Credit), D/P, D/A, Credit Card, PayPal, Western Union
Factory Direct Contact [email protected]

Partner with Zhejiang Harlon Electronic Co., Ltd.

Send us your wattage, input/output voltage, pin configuration, or custom housing blueprint. Our electrical design engineers will analyze your project and provide a technical recommendation and quotation within 3 hours.

Get a Quote