Heat-shrinkable cable accessories are made into heat-shrinkable tubes, tapes and special-shaped products according to the memory performance of heat-shrinkable materials. The shrinkage rate can reach 50%~80%. With these special excellent properties, heat shrinkable cable accessories are widely used in chemical, petroleum pipeline sealing and anti-corrosion, household appliances, power cables, control cables, defense communication shielding connection joint protection and electrical components insulation, insulation sealing, etc.