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Generally, the appearance of the better copper stranded wire is relatively bright, there is no obvious damage and scratches, and there will be no obvious oxidation reaction to cause discoloration. The gloss of the appearance is relatively symmetrical, and there are no black spots and cracks. , the distance is relatively uniform, so the above criteria must be met.

Copper stranded wire refers to a new type of composite wire composed of low-carbon steel as the core, processed by copper plating, and twisted according to certain rules. Copper stranded wire is a flexible connecting wire for power transmission and distribution, electrical devices (such as transformers, electric furnaces), electronic and electrical equipment, and thyristor components.

The soft copper stranded wire is made of high-quality and high-purity electrolytic oxygen-free copper rod, with high copper content, low resistivity, uniform current distribution, good bending resistance and continuous stranding;

According to the different characteristics of hard copper stranded wire and soft copper stranded wire, they are used in different fields. Hard copper stranded wire is often used in places that need to conduct electricity and require relatively high tension due to its strong tensile strength and better conductivity, such as power distribution lines and building conductors, as well as electric shock transmission.