SV Tech recently released the high-voltage tethered drones, which are the first mature tethered drones in China. According to the payload, they can be divided into four types: 1kg, 5kg, 10kg and 15kg. The drones can anchor 24-hour continuously in sky. At present, SV Tech tethered drones has been officially come into the market. The R & D team of SV Tech said that the tethered drones have integrated a number of important core patents, among which are the high-voltage power system, the coaxial motors, the automatic winch, the automatic following system without satellite navigation, the redundant power supply system, the quick switch system of the tethered drone, the high voltage airborne self-rescue system and the switch system between RC and CC traction. SV Tech independent intellectual property rights have exclusive technical advantages in domestic and international markets. SV Tech tethered drones are widely used in reconnaissance, communication, inspection, live broadcast, fire rescue, disaster relief.