The 17th China International Modern Railway Technology and Equipment Exhibition was held on the 8th at the Beijing National Convention Center. The most eye-catching exhibit at the exhibition is a model of CR450, a new model of the "Fuxing" family, scaled down at a ratio of 1:160. In the past six months, CR450 has been conducting a series of tests, and the current test speed has reached 450 kilometers per hour, which means there is room for future operation at a speed of 400 kilometers per hour. While the speed has increased, indicators such as braking distance, driving noise, and energy consumption have all maintained the standard of 350 kilometers per hour, representing another leap in China's high-speed rail technology. At the exhibition site, there is also the first domestically produced high-altitude high-altitude and high-altitude large-diameter hard rock tunneling machine model, the "Xueyu Pioneer". It is scaled down at a ratio of 1:100, with the original model having a diameter of 10.33 meters, a total length of 245 meters, and a weight of 2500 tons. It is currently operating on the western plateau railway. One of its new features is advanced geological prediction, which can detect adverse geological conditions such as rock bursts, deformations, water surges, etc. 100 meters ahead of the tunnel in real-time and accurately without stopping the machine, minimizing safety risks during tunnel excavation. At the same time, the world's largest tower crane model was also exhibited. This crane can lift materials weighing 600 tons to a height of 92.5 meters for high-altitude operations, setting 10 world records in the field of engineering construction. Currently, it has been applied in some major railway bridge construction projects. It is reported that 521 companies from 14 countries and regions including China, Germany, France, and the United States participated in this exhibition, with a total exhibition area of 40000 square meters. International giants in the field of rail transit gathered, showcasing the latest technological achievements in the world's railway equipment manufacturing. (New Society)