Precision Wound. Built to Last.
30 Years of Winding
Expertise, Built Into
Every Coil We Make.
headquartered in Dongguan, China — trusted by global leaders
including Huawei, BYD, Tesla, and Delta Electronics.
Your Reliable Coil Winding
Partner in China
Founded by a management team with over 30 years of deep expertise in the coil winding industry, WIRESUN has grown into one of Dongguan's trusted precision winding manufacturers.
Our 5,000 sqm facility houses 50 Zongheng CNC precision winding machines and a skilled production team dedicated to delivering consistent quality, from fine wire prototypes to large-scale production runs.
We serve clients across Southeast Asia, Europe, the Americas, and Russia, supplying precision coils for smartphones, automotive electronics, home appliances, and industrial equipment.
A Factory Built for Precision
Tour the production environment where every coil is wound.
Production Capacity
Production capacity across 4 dedicated winding lines, with rapid changeover for multi-SKU orders.
Wire Gauge Range
Our machine setup covers the full spectrum from ultra-fine litz wire to heavy-gauge power inductors.
Quality Control
Every coil batch undergoes automated inductance, DCR, and impedance testing before packing.
Three Decades of Growth
From a small winding workshop to a globally trusted OEM partner.
Founded
Established in Dongguan by a founding team of coil winding engineers.
First Export Order
First overseas shipment to Southeast Asia, beginning international expansion.
Factory Expansion
Relocated to a purpose-built facility and expanded CNC machine capacity.
ISO System
Formalized quality management, traceability, and process documentation.
Tier-1 Partnerships
Qualified for demanding electronics and automotive supply chain projects.
Advanced Automation
Upgraded precision winding equipment and fine-wire production capability.
Global Expansion
Sales network extended across Europe, the Americas, and Russia, serving more than 30 countries.
Today
Ongoing investment in precision equipment, engineering talent, and QC systems.
Working on a new coil specification?
Send us your drawing, sample, or target parameters. Our engineering team can review feasibility and production route.
The Principles Behind Every Coil We Wind
Culture isn't a poster on the wall — it's how we handle a tolerance dispute at 11pm before your shipment deadline.
Precision First
We treat ±0.01mm not as a marketing claim but as an engineering obligation. Every machine setup is verified, every batch is tested, every deviation is documented.
Transparent Partnership
We quote realistic lead times. We report production issues before they become delivery problems. We believe long-term clients are built on honesty, not optimism.
Continuous Improvement
Our engineering team runs internal improvement workshops quarterly. New winding techniques, tighter tolerances, faster setups — we invest so you don't have to switch suppliers.
Customer-Centered Service
One client, one account manager. Your dedicated contact knows your product history, your specs, and your timeline — from the first sample to year five of production.
Global Mindset
Our documentation, communication, and packaging are designed for international buyers. We speak your timeline, your incoterms, and your inspection standards.
Responsibility
RoHS and REACH compliant materials as standard. Responsible waste management and energy-use practices across all production lines.
Certified. Tested. Documented.
Our quality system is built to satisfy global procurement standards, from ISO audits to compliance declarations.
ISO 9001:2015
Quality management system documentation and process control.
RoHS
Declarations available for standard wire and production materials.
REACH
Compliance support for global procurement and audit requirements.
Electrical Test Reports
Batch-level electrical test reports can be supplied with shipment.
Inspection
SGS, BV, or Intertek inspection can be arranged on request.
NDA
Confidentiality agreements are available before technical disclosure.