Oxygen-free copper wires are wires made of high-purity oxygen-free copper with high conductivity and electrical conductivity, which can provide more stable current transmission and lower resistance loss. Oxygen-free copper wires are widely used in high-precision electronic equipment, communication equipment, power systems and other fields, especially for occasions that require high quality and stable performance. In contrast, although pure copper wires also have better conductive properties, but the purity is lower, susceptible to oxidation, resulting in higher resistance and affecting the quality of current transmission. Therefore, all things considered, oxygen-free copper wire is better.