At present, it has developed to ultra-high voltage 69KV and 161KV power cables. There are many types of wire and cable products, which can be roughly divided into bare copper wires, enameled wires, electronic wires, power wires (cables), communication wires (cables), etc. Each type of product has different uses. Their specifications, structures, raw materials, processing methods and equipment used are also different. Among them, products with higher technological development level and higher added value should be the first to be recommended, 69KV and 161KV cross-linked PE power cables, which are also the main investment and production products of the domestic industry in the past ten years.