135 Yinshan Str., Baiyin District
730900 Baiyin City

Phone: +86 7566 338307
Web address:
Stand: 2M41

Company Profile
Founded in the year 2000, Yizhi Changtong has been focusing only in manufacturing ultra-fine enameled copper wires, bare copper wire diameter from 0.012mm to 0.8mm. Our monthly productivity is up to 1000 tons, among which 60% of the orders are for wires of diameter 0.100mm and smaller. Besides the ordinary UEW and EIW wires, we are expanding our product lines to ultra-fine self-bonding wires, copper alloy wires and CCA wires as well.

*Plant area 50,000 square meters;
*Staff number 350+;
*Bare copper wire diameters from 0.012mm to 0.8mm;
*Self-bonding wires from 0.012mm to 0.60mm;
*400+ drawing machines & 90+ enameling machines;
*Monthly productivity capacity up to 1000 tons;
*ISO 9001, ISO 14001, OHSAS18001 compliance;
*IATF 16949 certified;
*RoHS & REACH conformance;
*UL file number E363385 ;

The copper content in our enameled copper wire is over 99.95%, quality guaranteed.
The typical thickness of insulation are Grade 1 & Grade 2 as per IEC 60317 standard, or Class 1 & Class 2 & Class 3 as per JIS 3202 standard.


0.018~0.022 : 3UEW/155
Watch coil application

Ultra-fine overall diameter;
Very little fluctuation of electrical resistance;
Zero pinhole after elongation.

0.044~0.078 : G2 180
Ignition coil application

Consistent OD;
High breakdown voltage;
Very limited pin holes;
Suitable for high speed winding.

0.026 : 3UEW/180
for SMD vibration motor application

Ultra-fine overall diameter
Very little fluctuation of electrical resistance
High thermal grade
High cut-through temperature
Good flexibility
Zero pinhole after elongation

Product index
Other Machines and Manufacturing Systems
Winding Systems & Supplies
Winding Supplies
Winding Wires
Enameled Wires
Enameled Copper Wires