Heat shrinkable sleeve is a new high-tech product. It has good physical and chemical properties, corrosion resistance, insulation and heat dissipation and flame retardant properties. It provides a new type of insulation and protection material for electrical and communication projects. It is suitable for copper bars, Aluminium bar, insulation, protection and identification of wire and cable and cable terminals and joints, electrical system linear components, insulation protection of terminal blocks and joints and wire bundling in flexible wiring harnesses. And it is easy to use, just need to use a hot air gun, gas welding gun or oven heating sleeve to shrink.Heat shrinkable tube has the functions of low temperature shrinkage, soft flame retardant, insulation and anti-corrosion, and is widely used in wire connection, insulation protection, wire end treatment, resistor, capacitor insulation protection, wire marking and end, metal tube, rod protection. Rust and corrosion protection, as well as antenna protection. 1. Prevent mice, snakes and other animals from causing short-circuit faults. 2. Prevent the corrosion of the busbar by chemical substances such as acid and salt. 3. Prevent maintenance personnel from accidentally entering the live gap and causing accidental injury. 4. Adapt to the development trend of miniaturization of switchgear. 5. Solve the problem of phase-to-phase insulation of the busbar.