HCS-H is a heat-shrinkable tube made of polyolefin and hot-melt adhesive. It has strong adhesion to PVC, PE and metal. It is used to protect the connection, waterproof and anti-corrosion. It can be strengthened in a rough environment. Vibration, has a good function of insulating and protecting electronic connectors. Compared with conventional connectors, it has the advantages of durability, easy installation and low installation cost.