The Cyky series cables (including models Cyky-O and Cyky-J) are 3-core 2.5mm² copper core polyvinyl chloride (PVC) insulated power cables, suitable for various low-voltage power transmission scenarios.​ The conductors of this series of cables are made of high-purity copper, which has excellent conductivity, can effectively reduce energy loss during power transmission, and ensure stable current transmission. The insulation layer is made of polyvinyl chloride material, which not only has good electrical insulation performance, but also has certain wear resistance and chemical corrosion resistance, and can be reliably used in general industrial, civil and commercial environments.​ The 3-core 2.5mm² specification design makes it suitable for power supply of small and medium-power equipment, such as home lighting circuits, wiring of small household appliances, and branch line wiring in office buildings, shops and other places. Different models (Cyky-O, Cyky-J) have slight differences in structural details to adapt to different laying methods, such as surface mounting, pipe threading or burial, meeting diverse installation needs.​ In general, with stable performance, moderate specifications and wide applicability, the Cyky series cables have become an economical and practical choice in low-voltage distribution systems, and can provide safe and reliable power support for various scenarios.