Zhuhai City has built the longest mileage, the largest scale and the most complete system of underground comprehensive pipe trench in China. The total length of the trench is 33.4 kilometers, and the main pipelines in the corridor are: DN1200 water supply pipe, DN200 water pipe, DN110 communication pipe, 220KV power cable; DN350 condensate pipe, DN600 water pipe, and DN500 garbage vacuum pipe are reserved.
