In the emerging urban rail transit field, CRBBG is always standing in the forefront of scientific research, and has undertaken a number of national subject studies in 863 Plans and technical support plans. It has successfully developed, manufactured and installed products such as high speed maglev flexible switches with diverging speeds of 98km/h and 196km/h, 24m traverse table, whole series of switches for medium-low speed maglev and straddle monorail transit,straddle monorail engineering vehicle, straddle switches for tourism light rail, and suspended