On the 6th Shenzhen International UAV Expo on May 21, SV Tech SV Tech released all new "Light of Peace" tethered coaxial helicopter T30H300. It sets a new benchmark for the innovation and development of the tethered drone industry. T30H300 has 138 patents and 15 software copyrights. 1700 high voltage DC is directly supplied to the power system H7 self-made by SV Tech. T30H300 has 30kg payload and can anchor 300 meters high in sky 7X24 hours.