Adopting a double-layer composite insulation structure with a temperature resistance class of 200°C, it boasts outstanding high-temperature resistance and thermal aging resistance. The enamel film is flexible, wear-resistant and strongly adherent, and not prone to damage during processing. It delivers stable electrical performance and high breakdown voltage, along with oil resistance, solvent resistance and moisture resistance, featuring excellent overall reliability. It is widely applicable to windings of various medium and high-end motors and electrical appliances.