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As the demand for modern traffic management continues to grow, traditional manual barricade methods have increasingly shown their inefficiencies and safety risks. To improve road management efficiency and safety, Zhengyang Company has launched its innovative fully automated barricade vehicle, design

The SHARK aircraft is named for its appearance, which resembles a "shark." The Shark aircraft is a tandem two-seat, single-wing light aircraft, with a fuselage made of carbon fiber/Kevlar composite materials, retractable landing gear, and a full-aircraft parachute. The aircraft's technology is matur