Master key Mk series of unmanned aerial vehiclemake it lighter, and have larger rotor disc surface than traditional helicopter. So Mk can doubles the takeoff weight and has only quarter transportation volume than other UAS in same gross weight.
The Mk has a modularized airframe and lower gross weight. Meanwhile, the special design and materials extend the maintenance period by ten times than traditional UAV, reduces the maintaining and using costs.
MK series：MK-18 Payload : 12kg Endurance : 60min
MK-50 Payload : 29kg Endurance : 3h
MK-200 Payload : 140kg Endurance : 12h+
