Features a multi-layer sealing structure that provides absolutely reliable protection against water, moisture, and corrosion, ensuring long-term internal dryness and stability. Advanced stress control technology effectively equalizes the electric field at the cable connection point, eliminating partial discharges and ensuring line safety. The robust external sheath and internal structure are designed to withstand mechanical stress, electrodynamic forces, and environmental changes, guaranteeing mechanical durability. Particularly for cold-shrink joints, no special heat sources or tools are required. Installation is completed leveraging its elastic memory effect, significantly reducing installation time and skill dependency.