Cyy, Cyy - F, Nyy - J, Cyey, Cyey - F, Cyeaby - F, Cyeaby, and Cyaby are all common power cable models, suitable for different power transmission scenarios and able to meet diverse electricity needs.​ These cables have different characteristics in terms of materials. Some models use cross - linked polyethylene (XLPE) as the insulation material, which has good temperature resistance and insulation performance and can reduce transmission loss; some adopt PVC as the sheath, which has strong corrosion resistance and mechanical protection ability and can adapt to complex environments. Models with "-F" may have flame - retardant properties, making them safer to use in places with a high fire risk (such as shopping malls and hospitals); suffixes like "-J" may represent specific structural or performance optimizations to enhance the stability of the cable.​ They have a wide range of application scenarios, covering from the distribution lines of ordinary buildings to the power connection of industrial equipment. For example, models such as Cyy and Nyy - J can be used for regular wiring in residential buildings and office buildings; Cyey and Cyaby are suitable for industrial environments with higher requirements for insulation and sheath performance; flame - retardant models are suitable for crowded places such as schools and subways. All models meet relevant power transmission standards and provide reliable support for power supply.