The biggest star of the 5th Tianjin International Expo is the direct -20 that was first publicly released in the National Day military parade. It uses the high-power turboshaft engine with its own intellectual property rights, telex control system, vitrified cockpit, composite material. The international fourth-generation helicopter technology, such as the fuselage and rotor, marks that China's helicopter industry has reached the world's first echelon level. Straight-20 not only brings a type 1 10-ton utility helicopter to China, but its technology can also be used to develop the next generation of heavy duty in China. military helicopter.