Developed by China Railway Construction Heavy Industry Co., Ltd (CRCHI), the world's first intelligent shotcrete machine recently rolled off the production line in the city of Changsha. It is known that this is the world’s first platform, which can realize 3D scanning modeling of tunnel injection area, and has self perception, self decision and adaptive intelligent injection machine with automatic location, path planning, intelligent injection, automatic correction, data interaction and other functions.

In 2017, Changsha realized an industrial added value of 353.326 billion yuan, an increase of 8.5% over the previous year and an increase of 0.6 percentage points, higher than the national and provincial average of 1.9 and 1.2 percentage points. Judging from the development trend, the growth rate of industrial added value above designated size remained above 8% for eight consecutive months.