Power cable accessories are products that connect cables with transmission and distribution lines and related distribution devices, generally referring to the intermediate connection and terminal connection of various cables in the cable line, which together with the cable constitutes the power transmission network; Cable accessories are mainly based on the characteristics of the cable structure, which can not only restore the performance of the cable, but also ensure the extension of the cable length and the connection of the terminal. The high voltage cable accessories are reliable, sealed and moisture-proof