Recently, Fine Line has officially delivered in bulk to multiple smart equipment manufacturing enterprises, applied to Bluetooth earphones, gimbal motors, and smart watches with built-in micro motor coils. This series of fine wires achieves micrometer level wire diameter control, with high wire uniformity, low wire breakage rate, no pinhole defects in the paint film, and is suitable for high-speed automatic winding process. Compared to conventional wires, the product has stronger flexibility and is suitable for high-density arrangement in narrow cavities, effectively improving the stability of micro motor operation, reducing equipment failure rates, and providing key material support for the lightweight and miniaturization of consumer electronic products.