At present, the leading products of us are enameled round aluminium wire and enameled round CCA wire, including 130/155 class polyester; 130/155/180 class Polyurethane; 180 class (solderable) polyesterimide; 200/220 class(self-lubricating) polyesterimide overcoated with polyamideimide; 220 class polyamideimide, and the size range is between 0.080mm and 1.000mm. This two kinds of enameled wires are extensively used in the fields of the miniature motor, the transformer of microwave oven, the inductance coil, the degaussing coil, the rectifier and so on. In the quadratic programming of us, the products will cover the whole application domain where the enameled wires can be used.