Cable clamp is the place with the highest use and production of cable clamp, and it is also the place with the most obvious quality advantage. Three advantages of cable clamp: 1. Easy installation: the cable branch can be made without stripping the insulating skin of the cable, and the joint is completely insulated. It is not necessary to cut off the main cable, and branches can be made at any position of the cable. The installation is simple and reliable. It can be installed with electricity only with a socket wrench. 2. Safe use: the joint is resistant to distortion, shock, waterproof, flame retardant, electrochemical corrosion and aging without maintenance. It has been successfully used for more than 30 years. 3. Cost saving: the installation space is very small, saving the cost of bridge and civil engineering. For application in buildings, there is no need for terminal box, junction box and cable return, so as to save cable investment. The cost of cable + puncture clamp is lower than that of other power supply systems, which is only about 40% of the inserted bus and about 60% of the prefabricated branch cable.