Underground crossing is an inevitable requirement of social development. Whether the planning of various industry sectors is not in place, coordination is not good, or the need for infrastructure development, new underground facilities are constantly increasing. At this time, either excavation or non-excavation will inevitably choose one. Because the advantages of trenchless technology are gradually recognized by people, the technology of trenchless technology is becoming more mature, and the cost of trenchless construction is decreasing year by year, so the application of trenchless technology is increasing year by year. Underground pipelines are an important part of urban infrastructure. Cable pipes, water supply and sewerage networks, and thermal (power) pipelines are known as urban lifelines along with underground railways. With the development of society, the length of underground pipelines continues to increase without trenching. There is huge room for growth in the market.
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