Semi-conductive single-side water-blocking tape and semi-conductive water-blocking tape are types of tapes used in cables to prevent water penetration and damage. The main difference between the two is that the semi-conductive single-side water-blocking tape is designed to be applied on one side of the cable, while the semi-conductive water-blocking tape can be applied on both sides. Additionally, the semi-conductive layer in the semi-conductive water-blocking tape allows it to provide electrical insulation properties in addition to water-blocking capabilities.