With the features of heat resistance, refrigerant resistance, cold resistance, radiation resistance etc, and high mechanical strength, stable air performance, good chemical resistance and refrigerant resistance, strong overload capacity, 220 polyamide-imide enameled copper (aluminum) rectangle wire is widely used in refrigerator compressor, air conditioning compressor, power tools, explosion-proof motors and motors and electrical appliance used in conditions of high & cold temperature, high radiation and overload. The products are small in size, stable in performance, safe in operation and remarkable in energy saving.