The A2xfy, 2xfy, A2xwy, 2xwy series of cross-linked polyethylene (XLPE) insulated polyvinyl chloride (PVC) jacket underground copper core power cables and wires are high-efficiency solutions specially designed for underground power transmission scenarios. Their core structure adopts high-purity copper conductors, which have excellent electrical conductivity, can reduce energy loss during transmission, and ensure efficient power delivery.​ The insulation layer is made of cross-linked polyethylene material, which after special processing, has excellent temperature resistance, chemical corrosion resistance and electrical insulation strength. It can maintain stable performance in complex underground environments (such as changes in soil pH, microbial erosion, etc.), effectively resisting the impact of moisture penetration and mechanical extrusion. The outer polyvinyl chloride sheath further strengthens the cable's protective ability, with good anti-aging, wear resistance and moisture resistance, which can adapt to the harsh conditions of long-term underground burial and extend the service life of the cable.​ This series of cables is suitable for underground power transmission and distribution systems, municipal engineering, underground wiring in industrial plants and other scenarios, and can meet the power transmission needs of different power levels. Its design complies with industry standards for underground cable laying, taking into account safety and reliability, and can provide a solid guarantee for the stable operation of underground power networks, reducing later maintenance costs.