Founded in 2015 in Zhuhai, China, Ziyan UAS (Zhuhai Ziyan Unmanned Aircraft Co.) specializes in electric unmanned helicopter systems for both defense and civilian markets[1][2]. Its product line includes long-endurance VTOL drones like the F15 series and the Blowfish heavy-lift UAV, designed to carry mission payloads (up to ~15 kg) for tasks ranging fro…