Protect winding yield
Review conductor tolerance, finished outside diameter and winding behaviour for micro-fine production.
JINWEI · WINDING WIRE MANUFACTURER
Micro-fine wire.
Specified for your coil.
Copper winding wire for micro motors, inductors, relays and voice coils. Tell us your winding, insulation and termination requirements; we will review a suitable wire and sample route with you.
✓ 0.025 mm UEW / PEW / EIW options 1996 manufacturing roots
FINE & MICRO-FINE WINDING WIRE
Polyurethane enamelled copper wire
Since 1996Wire manufacturing experience
0.02–0.08 mmCore fine-wire diameter range
2 product familiesPolyurethane & self-bonding
WHY BUYERS CONTACT JINWEI
Start with the coil problem, not a catalogue code.
We help buyers narrow a wire specification before a trial, using dimensions, insulation system and process requirements.
Match the insulation to termination
Compare solderable polyurethane, polyester and polyesterimide options against your heat class and stripping or soldering method.
Validate before a volume order
Discuss trial reels, spool format and the exact test documents needed for the selected wire and destination.
Product suitability and export terms are confirmed per enquiry; the site does not promise a result for every design.
OUR PRODUCT RANGE
The right wire is a strong beginning.
Explore materials for your winding and coil-forming process.
POLYURETHANE · UEW
Fine enamelled copper wire
Solderable polyurethane insulation for fine winding applications.
Core diameters0.02–0.08 mm
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NATURAL & COLOURED
Coloured enamelled wire
Colour options for identifying different winding circuits and leads.
Available colours
View colour options 
SELF-BONDING WIRE
Self-bonding winding wire
Product-specific bonding systems for formed and self-supporting coils.
Catalogue thermal classes155 / 180
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1996Our manufacturing story began
A MANUFACTURER BEHIND YOUR WIRE
Built on experience.
Focused on fine wire.
Jinwei manufactures fine enamelled copper wire and self-bonding wire in Jiangxi, China. We bring decades of wire manufacturing experience to the materials used in your coils.
1,600+ tonnesAnnual output*
32,800 m²Company premises*
*Figures from the company’s published profile.
Inside our factoryAPPLICATIONS
From fine wire to finished coils.
Application ranges are discussion starting points, not guaranteed stock or one-size-fits-all recommendations.
Micro motors & precision drives
Micro DC, precision-drive and vibration motors. Reference conductor diameter: 0.03–0.15 mm.
Inductors & micro transformers
Communication equipment, power modules and precision electronics. Reference: 0.02–0.10 mm.
Relays & electromagnetic coils
Control relays, actuators and miniature solenoids. Reference: 0.03–0.12 mm.
Micro speakers & voice coils
Earphones, miniature speakers and audio drivers. Reference: 0.015–0.08 mm.
Precision coil manufacturers
Sensor, instrument and micro-electromagnetic coils. Share your drawing or winding parameters for review.
Application suitability is confirmed against your design, manufacturing process and qualification requirements.
See application case notesAPPLICATION CASE NOTES
One wire choice can change the whole coil process.
Explore the questions behind five common winding applications. Each case note shows what to specify and what to test before ordering.
Explore application cases ↗
QUALITY & DOCUMENTATION
Clear specifications. Original reports.
Review product performance and environmental test documentation.
PDF2024
PRODUCT PERFORMANCE
QA-1/155 · 2UEW · 0.035 mm
Report DX2403027 records ten tested items as meeting the referenced standard for the submitted sample.
Original Chinese / English reportPDF11 AUG 2025
RoHS SAMPLE TEST
Natural-colour enamelled wire
Report PTC25080420013C-CN01 assesses the submitted sample against the RoHS requirements stated in the report.
Original Chinese reportPDF11 AUG 2025
SVHC SCREENING
Natural & coloured wire samples
Report PTC25080420016C-CN01 covers submitted natural, blue, green, red and black wire samples and the substance list specified in the report.
Original Chinese reportReports relate to the samples, dates and test scope stated in each document. Please confirm the documentation needed for your selected product.
BEFORE WE START
Good questions.
Clear next steps.
Everything starts with understanding the wire your process needs.
Talk to JinweiWhat information is needed for a quotation?
Send conductor diameter, wire type, insulation build or finished outside diameter, thermal class, application, spool requirements, trial quantity and delivery destination. Attach an existing datasheet or drawing if you have one.
Can I discuss a trial sample first?
Yes. We review the specification before discussing a trial. Sample quantity, availability, charges, freight and evaluation requirements are agreed for each enquiry.
How are price and lead time confirmed?
Price, minimum order quantity, production lead time, packaging, payment terms and delivery terms are agreed in the quotation after we review your requirements.
Can you help identify an equivalent wire?
Send your current wire designation and datasheet. Similar model names do not always mean identical performance, so the proposed specification is reviewed before sampling.
START WITH YOUR SPECIFICATION
Let’s find the wire for your coil.
Send your wire designation, drawing or target diameter. Worldwide B2B enquiries welcome.