With the technology strengthens and infrastructure level improves, people's requirements for urban optimization are also increasing. Whenever the pipeline is repaired, maintained, expanded and transformed, the road surface needs to be opened like a zipper, and the construction section needs to be "isolated" by engineering enclosure, which not only affects the integrity and beauty of the road, but also causes traffic congestion and maintenance costs increase.

In this case, the underground common pipeline was born because of development of science and technology. It refers to a tunnel space under the city, which integrates electric power, communication, gas, heating, water supply and drainage and other engineering pipelines. It has a special overhaul gate, hoisting port and monitoring system. It needs unified planning, unified design, unified construction and management, and it has become an underground repair post station.

The new design concept of underground common pipeline has become a good inspiration for integrated project and convenient life, and a solid foundation for optimizing urban construction. agreeing with the idea that science and technology change life, Liming Heavy Industry is also pursuing this machinery value. Therefore, Liming Heavy Industry will make crushing equipment more quality to provide excellent finished aggregate for underground common pipeline project.