[China's first magnesium alloy lightweight trailer delivered] April 23, today, China's first magnesium alloy lightweight trailer developed by Xi'an Jiaotong University and jointly developed by a number of units was delivered in the scientific and technological innovation port of western China. Different from the replacement of magnesium alloy with a single part, the joint R & D team applies the concept of lightweight magnesium alloy throughout the whole process of design and development, engineering manufacturing and aftereffect verification of heavy-duty trucks for the first time to form a system design scheme. Combined with the superior resources of the whole chain of magnesium alloy, it has successively overcome the key technical difficulties of high-quality automotive magnesium alloy in fine uniform ingot casting, precision plastic forming, robust connection and assembly, controllable and efficient protection, and so on. After the vigorous cooperation of 15 units in 6 provinces, the first lightweight magnesium alloy trailer in China was successfully developed after more than 500 days.