• Excellent heat resistance. Thermal Class 180C.
• Great mechanical properties. Elasticity modulus of polyimide fiber is up to 500 MPa, only lower than carbon fiber.
• Good chemical stability, moisture resistance and heat resistance. Polyimide is insoluble in most organic solvents and resistant to corrosion and hydrolysis.
• Radiation resistance. Tensile strength of polyimide film maintains at about 86% after radiation of 5×109 rad while some of them can maintain 90% at 1×1010 rad.
• Good dielectric properties with dielectric constant less than 3.5
| Single wire dia |
0.04mm-1mm |
| No. Of strands |
2-8000(to different specification, it depends on cross section ) |
| Max. O.D. |
12mm |
| Insulation class |
130, 150, 180 |
| Type of insulation |
polyurethane |
| Tape |
PET, PI, ETFE, PEN |
| UL grade of tape |
PET film max. CLASS 155, PI film max. CLASS 220 |
| Degree of overlapping |
normally we can do is 50%, 67%, 75% |
| Breakdown voltage |
Min. 7,000V |
| Color |
natural, white, brown, gold or on requests |
• All of our wires are ISO9001, ISO14001, IATF16949, UL, RoHS, REACH and VDE(F703) certified
• Carefully selected 99.99% pure copper material with high electrical conductivity
• More than 20 years experience in taped litz wire and 200 tons of capacity per month
• Complete customer service from pre-sales to after-sales
Our taped litz wire can be packaged by spool of PT-15, PT-25, PN500 and others according to your requirements.
• 5G base station power supply
• EV charging piles
• Inverter welding machine
• Vehicle electronics
• Ultrasonic equipment
• Wireless charging, etc.
5G base station power supply
EV Charging Stations
Industrial Motor
Maglev Trains
Medical Electronics
Wind Turbines
Founded in 2002, Ruiyuan has been in the manufacture of enamelled copper wire for 20 years.We combine the best manufacturing techniques and enamel materials to create a high-quality, best-in-class enameled wire. The enameled copper wire lies at the heart of technology we use every day – appliances, generators, transformers, turbines, coils and much more. Nowadays, Ruiyuan has the global footprint to support our partners in marketplace.
Our Team
Ruiyuan attracts many outstanding technical and management talents, and our founders have built the best team in the industry with our long-term vision. We respects the values of each employee and provides them with a platform to make Ruiyuan a great place to grow a career.