SFHK UAV
SFHK UAV is a Chinese UAV developed by Xi’an Si-Fang Aviation Science and Technology Co., Ltd. (SFHK, 西安四方航空科技有限公司), and has entered service in China for aerial cinematography, photography, riot control and survey missions. Unmanned helicopter. SFHK is an established Chinese provider of UAV subsystem such as reconnaissance and communication relay payloads for UAVs, and recently, the company has expanded its business further in UAV arena by providing UAV of its own design. The UAV developed is an unmanned helicopter in conventional layout with a pair of skids as landing gear, and the UAV adopts modular design concept  so that multiple missions can be performed when different payloads are installed. The UAV adopts commercial off-the-shelf (COTS) subsystems such as airframe, and the general designer is Mr. Guo San-Xue (郭三学), who is also responsible of developing the UAV into an armed version for riot control. The riot control version is usually armed with non-lethal munitions and the complete name is Small Police Drone Attack System (Xiao-Xing Jing-Yong Wu-Ren-Ji Gong-Ji Xi-Tong, 小型警用无人机攻击系统). See also. List of unmanned aerial vehicles of the People's Republic of China