Polyurethane enameled round copper wire with polyamideimide insulation; copper strands are conductive and the insulation protects the wound wire from short circuits. Withstand voltage 3000V to 5000V and temperature resistance from 130 to 180 C; suitable for voltage and temperature environments. Good frequency resistance and easy coloring, enabling reliable performance in RF and precision applications while allowing clear marking. direct solderability; prevents film peeling during winding, which improves winding efficiency and reduces processing time; dielectric loss tangent is small for stable operation. enamel coating provides durability and prevents wire damage during winding; supports long coil life and reduces breakage risk. Widely used in electronic devices, precision instruments, telecommunications and meters, offering reliable insulation and performance. Use scenarios: Winding coils for transformers and inductors in power supplies and RF circuits, where voltage tolerance and stable dielectric properties are needed. Manufacturing and repairing precision instruments and meters that require durable enamel insulation and easy solderability. Telecommunications equipment assembly and maintenance, where clear color marking, low dielectric loss, and robust winding performance improve production efficiency and device reliability.