Tethered Drone manufacturer / supplier in China, offering Constant Voltage Output Dji Flycart 30 Drone Tether Power System for Surveillance, Dji Flycart 30 Tether Power System Supporting 24hours Drone Flight Duration, Dji Flycart 30 Drone Tether Station for Environment Inspection with 220m 330m Tether Drone Cable and so on.